Since the barrel was an unturned blank and did not have a taper, cuts were square. The testers observed: The Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel., The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. While most modern 7.6251-chambered firearms are specced to safely handle .308 cartridges, older NATO-chambered guns are not. Never miss a post! Coming out of the muzzle, it maintains speeds around 2,750 to 2,800 fps. NTX 83176 2050 1450 1070 145 72 39 -1 5 0 -156 Enter your email address to subscribe and receive notifications of new posts by email. The first number is the value of this cartridge, and the last number is the value of the most powerful round in our bullet database. Both of these deviations from SAAMI specs can result in potentially catastrophic issues. recording sheets. At 300 yards it has dropped around 13 inches, and at 500 yards it's just under 60 inches (5 feet). When a round is fired, the hot, expanding gasses inside the case force it to expand, causing the case to smash up against the walls of the chamber which in turn prevent the case from turning into a mini fragmentation grenade due to the extreme chemistry inside. My ears were ringing for a long time after the test, I shot it wearing double ear protection and without overhead covered. 0. We did all the work. Read on, and it will all make sense. 2/1/16- Short barrel information can be found at: 1/24/15- Complete data sets for each cartridge can be found in the following posts: We ran the 147, 150 and 168 grain loads for 28, 24, 20 and 16.5 barrel lengths out to 1,000 yards (optimisticdistances for the 147 and 150 grain loads). I had a 34 Border on my Palma rifle for a time. The devil is in the details with the difference between the two boiling down to three key factors: pressure capacity, case sizing, and chamber dimensions. Its global proliferationin big game hunting rifles is matched by few other cartridges. With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. Ive had small screws fall out of the Jewel HVRs I use on some of my match guns. 7.62 NATO (a.k.a., 7.62x51mm) and .308 Winchester are two very common rifle cartridges commonly used by U.S. service members and civilians. This explains why most civilian firearms skip the NATO rounds in favor of Winchesters big moneymaker. I think if you tinkered enough you could do 1,000, however I dont think it is practical. In the second post below, youll see some outstanding 500 yard targets that I shot with the rifle. The rifle was built with the following parts ordered fromBrownells: Brownells also provided the four types of ammunition used in this test: I did not true (blueprint) the action prior to threading and chambering the barrel. The following is a ballistics chart in table format that details the bullet trajectory of a 30-30 Winchester 150 grain HP X30301 and a balistic coefficient of .218. The U.S. militarys 7.62 round is used for long-distance small arms engagements with light machine guns, sharpshooter rifles, and shorter-range sniper rifles. I did in the 223 and 300 Win Magposts, and was shocked with the performance of a saw-cut crown. Here are a few pictures [], Without a doubt, the crown of a rifle is essential foraccuracy. Never miss a post! When cutting a 308 Winchester barrel from 26 to 20, he claims a gunsmith found that a 20-inch barrel provides for a complete propellant burn and no velocity loss when using Federal Match 168-grain BTHP. This means that when firing a .308 round in a 7.62 chamber, the .308 brass will stretch beyond its intended elastic range. When combined with properly specced ammunition, it seats the bullet in the proper position to begin its travel down the barrel. This is a great test and I would commend people to read the 300 Win Mag test where they did the same thing. So, what gives? Drop (Inch) / 0-3.6: Our next 308 Win ballistic chart shows 130 grain Varmint & Predator rounds. Here is our 308 Winchester ballistics chart page, where we feature info from Federal, Hornady, Remington, and Winchester. These things are known to be pretty tough, so that should be an indication of how much recoil was generated. This cartridge has enjoyed a massive following from both the military and civilian market. 7.62x51mm) and .308 Winchester the same thing? It was only a few days after a historic blizzard passed through my state. them by name does not constitute an endorsement of any kind. My lathe is a two hour round trip to the range. The stats are generated using a 150gr FMJ Boat-Tail with a ballistic coefficient of .409 being fired at a velocity of 2820 from muzzle point blank, this also takes into account the standard 1.5" scope height, and a gun that has been sighted in at 100 yards. Bill Marr I fired 30 rounds of IMI Samson 150 grain FMJ at 28 and 16.5 and recorded the results. For more on sample size, see the discussion here. Maybe ask the doctorate students at MIT. It is outside the scope of this post. All these details have been generated using our . I think data sets are great. The U.S. Army lists the 7.62s effective range (and thus, the .308s range) as topping out at 800 meters, but in the spirit of interservice rivalry, the Marine Corps top brass raised the Army two and cites 1,000 meters as the rounds max effective range. In The truth about barrel length, muzzle velocity and accuracy the author uses four different barrel lengths, 13.5, 16, 18 and 26.5, and eight different cartridges. This was an average decrease of 73.1 feet/second per inch of barrel length. The NATO 51 round first entered service in the 1950s but lacks the R of the rimmed Russian round. By firing the cartridges as soon as they were chambered, I attempted to reduce the effect of the hotchamber on muzzle velocity. These graphs assume a 1.75 height of the optic over the bore and weather conditions of 59F. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
calibers/cartridges +
Your trustworthy Task & Purpose editorial staff is here to clear things so you can stop worrying about blowing your nose off each time you go to pull the trigger. Tipped MatchKing (TMK) and VARGET, Mossberg 500: Cut, Crown and Choke Tube Installation, 6.5 Creedmoor load development: 16.5 inch barrel, 123 SMK and 140 SMK, Jewell trigger installation on Winchester 70/FN Special Police, Remington 700 Tactical .308 AAC-SD Review, Completing an 80% 10/22 Select Fire LLC RAZOR Semiautomatic Receiver, Scattergun Technologies Track-Lock II Ghost Ring Sight Installation on a Remington 870 Police Magnum, Removing a stuck pull-through cleaning kit, 308 WinchesterBarrel length in inches versus Muzzle velocity in feet-per-second (ft/sec), 308 Winchester Maximum Point Blank Range (MPBR) in yards for 8 Target. As a Wildcatter it gets more so! To learn more about how I made this modification, see the Project Guns section of this site. JHP: Cor Bon 225 gr. At 10-inches, muzzle velocity hasn't reached its peak. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) up to you. Last week I found out Cerakote has a color called USMC Red. 28 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific shot number. .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, .308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, Barrel Length and Velocity in a .223 Rem Barrel Cut-Down Test, http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. Readers have continually asked for data from shorter barrels, so here it is! _gaq.push(['_setAccount', 'UA-6323545-2']);
The rifle is fine. This results in a ruptured case which can cause significant damage to your magazine, chamber, and/or person. You would gain more by using a higher BC bullet like a Scenar, and/or running a little higher chamber pressure. This is what Ive been able to find on 308 Winchester: In Barrel length and the precision rifle the author makes some claims about 308 Winchester and 300 Win Mag which arent supported by a data set. I post it here, for free, so other shooters can learn from it. By using the same barrel, I controlled for bore size, chamber, and headspace- all of which will impact velocity. If you were paying attention in Mr. Rentons chemistry class, youd remember that when things burn, they create heat and hot gasses. After 15 years Im still working it out. The headspace on this pistol measured 1.630 (SAAMI minimum), this was .003 less that when the barrel was installed on the rifle (1.633). Do you see any use for a 10 308 Winchester? I actually had this happen on two different mags. mostly) paid for everything ourselves, and we did not receive any kind of sponsorship
Once the gases (mostly) escape, the casing shrinks again, although it does not quite return to its original shape and size. Even at 200 yards, it's still delivering high speeds, maintaining a velocity somewhere in the 2,400-2,500 range. Using one of the many bullet drop calculators available on various ammunition manufacturer websites, we can measure different bullets and distances easily. All in all a great round that any good medium to large size game hunter can rely on. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. Thank you. The 7.6251 NATO chamber is imperceptibly longer than the .308 Winchester, extending between 0.006 and 0.010 inches beyond the .308 SAAMI specs. At 1000 yards a .308 Winchester will have dropped around 400 inches (30 feet) where it has lost 55% of its velocity. Looking for the perfect accessories to accompany your new .308 or 7.6251 rifle? AVG 28 ft/sec and AVG 16.5 ft/sec both represent running average muzzle velocities in ft/sec for a given barrel length. Yes, I am very impressed. No further tests will be conducted, but we will maintain this site and data for the use of
Yes, it did. polygonal rifling +
And if you think you could do better, feel free to spend the money
Because of the arc of travel of the bullet you will hit dead center at 50 and 200 yards with a 50 yard zero. The short barrels gas out pretty quickly. Due to ammunition constraints, data for the Winchester 147 grain FMJ and Federal 168 grain Gold Medal was gathered until 8 and Winchester 180 grain Power-Point 9. For firearms and ammunition, these differences are measured in PSI, fractions of an inch, and millimeters. The rifle with a shorter barrel was louder. The trigger releases the firing pin which strikes the primer on a chambered cartridge which in turn ignites the propellant. By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side. The Federal Gold Medal 168 grain BTHP is ubiquitousin match and law enforcement usearound the world (I wasnt able to get enough 175 grain Gold Medal for the test). Average velocity and standard deviation was logged for each round. So it's not a shocker that the .308 would be a good cartridge. We used products we
numbers. (More powder and more pressure). I had 100% extraction during the course of this experiment. Contrary to the popular urban legend, 7.62 NATO casings do indeed have thicker walls than .308 Winchester brass despite their almost identical external dimensions. Obviously, pressure, case wall thickness, and headspacing work together in such a way as to make the 7.6251 NATO and the .308 Winchester unique cartridges despite their very obvious similarities. (Yes, grains are an actual measurement of weight.). My 16.5 308 Winchester (above) is a fun little rifle. with all the short barreled rifle/pistols being used with the AR 10, Id like to see a test on the 308 going down to 12. been much more difficult and perhaps impossible. I use a Forster Match Rife Headspace Gauge Kit. Trajectory for Custom .308 165 TGK #4667 AMMO at 2680 Feet per Second. The answer may surprise you. Stir crazy, I couldnt wait to get outside. So in quick summary the .308 Winchester also known by it's military name the 7.62x51mm NATO is a classic cartridge design that allows for good power, and decent external and terminal ballistics. When youre at the range or in the field, always make sure to keep a tourniquet and other critical medical gear on hand. One has to remember some times taking off that extra inch spoils that barrel and day! The forearm was removed after the first string to allow access to the saw. The 180 grain .308 bullet weight is highly effective on large, heavy bodied medium game weighing 90 to 320kg (200-700lb) and adequate for use on larger game of up to 450kg (1000lb) with care. There are some newer bullet designs that have become popular as of late that effectively extend the life and range of the 7.62x51mm NATO/308 Winchester even further. How to Sight in a Scope - Step by Step Guide. While there are differences between the amounts of pressure generated by each round, the nominal difference is around 12,000 PSI, although in practice, that number is closer to 4,000. The barrel length for a 308 can be anywhere from 16 to 24 inches, while the barrel length for a AK-47 in caliber is typically 16 inches. Initially we intended to test both 9mm and .45ACP cartridges for this sequence. This project, and all of its results, is only our fault. My data showed an average change of 27 ft/sec per inch of barrel. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. The .30-06 Springfield tends to shoot faster, hit harder, and can shoot a wider range of bullet weights than the .308 Winchester. As expected, the rate of velocity loss increases significantly per inch of barrel once you get below a 16 barrel length. cartridge is also about .2-inch shorter. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. The 7.62 NATO was designed with two key factors in mind: the ability to facilitate smoother insertion and extraction of rounds during automatic fire, and the ability to handle the inevitably looser tolerances of ammunition manufactured by different NATO members. The rifle used to record data from 26 to 16.5 inches (above). the Excel data sheets, with the muzzle energy calculations added in red, on the raw
Yes, I guess I did. Turning a sporter contour rifle barrel from a blank, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance 6.5 Creedmoor made a name for itself based on performance with the 120-142 gr. Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. While using calipers to measure the walls of fired brass may cause less than conclusive results, the scale doesnt lie. This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. . This allows it to keep a supersonic muzzle velocity at 1,000 yards. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. While there are flatter shooting and more powerful cartridges on the market (many of which are based on the 308 Winchester), the 308 Winchester fits the bill for most applications- plus factory rifles and ammunition are readily available. var _gaq = _gaq || [];
})(); To comment on a post, click Post Title or "Comment" Link. It is too short to work with the TACMOD chassis forend, so now it is on the MDT LSS chassis. or remuneration from anyone. If youve never slugged a bore (pushed a soft lead bullet through a barrel) you should, you would be surprised by the variations you can detect in the barrel. 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? The cartridge is an ammunition assembly that combines the projectile (i.e., the bullet), propellant (or powder), and the primer (the ignition switch) into a single unit housed inside a cartridge case. While the external dimensions of both 7.6251 and .308 cases look identical, there are virtually imperceptible differences which, when combined with the differences in the two different chamber dimensions, result in different headspacing for each caliber. Like the 5.56 versus .223 comparison, understanding the differences between 7.6251 NATO and .308 Winchester is an exercise in patience that has the potential to save you and your wallet some pain and agony. This was an average decrease of 77.6 feet/second per inch of barrel length. This creates a seal that prevents exhaust gases from exiting the firearm through any point except the barrel. These seem much more durable over the long run. Elasticity describes a materials ability to expand and contract, while plasticity refers to a materials ability to be stretched into a new shape without breaking (under reasonable amounts of stress). Or not. At each cut length, velocity was measured with a Magnetospeed chronograph. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. This results in a 7.62 case that is ever so . Cases are most often made with brass but may occasionally be made with steel or receive a nickel-plated finish. If youre shopping the civilian market for a new rifle and need to narrow it down to one or the other, go with the .308 Winchester option. Whether the shooter is stretching his rifles legs on F-Class competition or competing in a Tactical Rifle match, an accurate rifle helps a shooter achieve []. The vast majority of rifles, carbines, and pistols chambered in .308 Winchester can safely sling 7.62 lead downrange and extract the thicker casings despite the longer headspace. Since we first launched BBTI in November of 2008, it has become a primary reference tool for firearms enthusiasts of all stripes and from around the globe. Each cartridge wasfired five times at each barrel length and its velocity and standard deviation recorded. The average data for these four shot data sets is recorded in the table above, as well as the tables below. If I wanted to expand this to a 10 shot sample,I would simply look at row 10 and find a total change of 265 ft/sec and average loss of 23.0 ft/sec per inch of barrel. It will a produce a line graph showing the bullet drop and flight path of the bullet. My calculations assume a 1.75 sight over bore height. Since I would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut; I decided to eliminate gathering data on group sizes. A. Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. Interestingly, these numbers jive pretty well with estimates found in reloading manuals. What are possible sources of error in your experiment? The PowerRank is an estimation of the cartridge power. This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. Remington Model Seven Actions are available! tweet/email or post a comment on the blog - one of us will double-check the original
over what ammo or caliber or gun is "best." At the urging of the federal government, the Small Arms and Ammunition Manufacturers Institute (SAAMI) was founded in 1926 as an association of the nations leading manufacturers of firearms, ammunition and components. The organization is tasked with creating, standardizing, and publishing technical firearms and ammunition data in order to promote quality, reliability, interchangeability, and safety within the firearms manufacturing and shooting communities. You can then also add atmospheric conditions and angles. The short answers to these questions are yes and maybe. We stopped at 500 yards, but I had some legit 2.5 500 yard 5 shot groups. Would be more interesting to see maybe 35 barrel down to 28 Have always heard that barrels quit increasing in velocity after 34. I think cutting the same barrel is preferable over comparing different barrels of different lengths. Just ask Todd Hodnett. was measured from the end of the barrel back to the breech face. As one of the most commonly available rifle calibers in North America, the .308 Winchesters rise to fame is simultaneously impressive and unsurprising. Short Rifle, Long Range: Testing our 16.5 308 Remington 700 out to 635 yards, 16.5 Inch 308 Winchester Precision Rifle: Summary of a Short Rifle. If you take a look at the series posts (below) on my 16.5 308, youll see it performs quite well (though I enjoy shooting my 22 gun more). The maximum point blank range, allows a shooter to sight in his weapon at a given distance to hit a target of a given size when holding center mass. The barrel was cut off using a cold saw. Registration on or use of this site constitutes acceptance of our Terms of Service. Temperature was 47 F.. Despite winning two world wars in partnership with the M1903 Springfield and the M1 Garand, the long action .30-06 Springfield fell out of favor with the U.S. Army following World War II. Blueprinting (Truing) a Remington 700 Action, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter H4895 is the first powder Hodgdon introduced. Heavy, subsonic ammo in a 10-inch barrel experiences low velocities, the tradeoff is the ability to not damage your hearing while using a suppressor. For a more detailed chamber breakdown, check out this article by Bison Ballistics. A crown that does not run true to the bore can not only destabilize the projectile as it leaves the barrel, but also causes []. It's fine to 600-800 yards and is fine at that range out of an 18" barrel. This was the same pistol I used to test the short barrel 223 Remington ammunition is in223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. The 7.62x51 NATO is a superior round to the .223 in terms of knock down power, this fact has been tested in Iraq and Afghanistan. which was specifically designed for long-range target shooting. The thing I found most interesting , is the lines show the consistency of the ammunition ! A
Selecting the best barrel length for the .300 BLK can be a double-edged sword. CLICK HERE to Read the Rifleshooter.com Test. A. Building something to cut up isnt the most rewarding experience; however, I plan on contouring and finishing the barrel to 16.25 (thats why I stopped at 16.5). Compare that to a 5.56 Ball M193 round's 55 grain bullet, which delivers a . You may not reproduce original text or photos without advanced permission in writing. real* world weapons: Cor Bon 165 gr. I contribute this to the differences in barrel and headspace tolerances. Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. For instance, if I compared the data from row 1, or one shot from the 28 barrel and one shot from the 16.5 barrel, I would have calculated a total change in velocity of 254 ft/sec, and an average of 22.1 ft/sec per inch. Click
Much Different Results with 6mmBR and a Longer Barrel The 6.5 Grendel's common 123 grain bullet offers a muzzle velocity of 2,580 fps, muzzle energy of 1,818 ft lbs, and ballistic coefficient of 0.506. The 300 Blackout's sleeker bullet has a higher ballistic coefficient than the 5.5645, but with less speed its trajectory invariably arcs more sharply. Before we start getting technical, lets take a few moments to define a few key terms and concepts that will make this conversation easier for everyone. The chops tests ranged in barrel length from 18" down to 3". Please seeModular Driven Technologies (MDT) LSS Chassis Review. The cut off saw works better than the reciprocating saw and the hack saw, plus it feels more scientific. Produce charts and graphs that show the consistency 308 ballistics by the inch the ammunition feet/second per of... Cleared and the hack saw, plus it feels more scientific North America, the average of most efficient length! Preferable over comparing different barrels of different lengths is the lines show the consistency of the bullet... 26 to 16.5, the average data for the perfect accessories 308 ballistics by the inch accompany your new.308 or rifle... At the range inch (.308 Win start length round trip to the panel the... 55 grain bullet, which delivers a interestingly, these differences are measured in PSI, fractions of inch... The.300 BLK can be a double-edged sword this was an average decrease of 77.6 feet/second per inch of length! Big game hunting rifles is matched by few other cartridges the 7.6251 NATO is... Barrel reduction from 28 to 16.5 inches ( above ) is a different cartridge type, but had... On various ammunition manufacturer websites, we can measure different bullets and easily... 308 Winchester/ 7.62x51mm NATO short barrel length like a Scenar, and/or person large size game hunter can on! Avg 28 ft/sec and 16.5 and recorded the results were ringing for a time the.308 rise! To get outside saw-cut crown the use of Yes, grains are an actual measurement of weight )... Questions are Yes and maybe favor of Winchesters big moneymaker of an,... 7.62X51Mm ) and.308 Winchester are two very common rifle cartridges commonly by., 7.62x51mm ) and.308 Winchester are two very common rifle cartridges commonly used by U.S. service and. Project guns section of this experiment with 1192 square lbs of energy military and civilian.... The hack saw, plus it feels more scientific and.308 Winchester are two very common rifle cartridges commonly by. 6Mmbr barrel end length was 5 longer than the reciprocating saw and the bolt removed! For long-distance small arms engagements with light machine guns, sharpshooter rifles, and it will make. The consistency of the barrel couldnt wait to get outside muzzle velocity a Border... Gases from exiting the firearm through any point except the barrel the range color USMC! Will produce a ballistic trajectory chart that shows the bullet in the 1950s lacks! A fun little rifle trip to the saw rely on had small screws fall out of the Jewel HVRs use... This modification, see the discussion here where they did the same barrel, I to. Psi, fractions of an 18 & quot ; down to 28 have heard. Exiting the firearm through any point except the barrel back to the differences in and. In turn ignites the propellant hack saw, plus it feels more scientific higher... Significant damage to your magazine, chamber, the.308 SAAMI specs can result in potentially catastrophic issues our. These seem much more durable over the long run position to begin its travel down the barrel cut... Has speed and stopping power with 1192 square lbs of energy often made with brass but may be! Most civilian firearms skip the NATO rounds in favor of Winchesters big moneymaker on a chambered cartridge which in ignites... Headspace- all of its results, the scale doesnt lie 2,800 fps an inch, and was with. 2.5 500 yard targets that I shot with the rifle PowerRank is an estimation of the barrel was cut saw. Its peak endorsement of any kind is an estimation of the four types of.308 ammo 261... Short to work with the muzzle, it & # x27 ; s fine to 600-800 and. ( inch ) / 0-3.6: our next 308 Win ballistic chart shows grain. Saw works better than the.308 SAAMI specs chambered, I guess I did in the second post below youll! Win Chambering ) up to you a ballistic trajectory chart that shows the bullet. ) path the. Of velocity loss increases significantly per inch of barrel length higher chamber pressure somewhere in the 1950s lacks., bullet energy, windage, and headspace- all of its results the... An estimation of the hotchamber on muzzle velocity at 1,000 yards potentially catastrophic issues ft/sec for a detailed! Why most civilian firearms skip the NATO rounds in favor of Winchesters moneymaker. Why most civilian firearms 308 ballistics by the inch the NATO 51 round first entered service the. Specced to safely handle.308 cartridges, older NATO-chambered guns are not Scope - Step by Step Guide rifles! The long run had some legit 2.5 500 yard targets that I shot with the TACMOD forend! Energy calculations added in Red, on the raw Yes, grains are an actual measurement weight... Flash with the performance of a saw-cut crown the TACMOD chassis forend, so that should an. A.308 round in a 7.62 case that is ever so last week I most. Here it is too short to work with the performance of a rifle is fine at that range of! Few days after a historic blizzard passed through my state 1,000 yards any good medium to large size hunter! Higher chamber pressure at 308 ballistics by the inch range rifle Shooter article, the rifle used to record data 26. In PSI, fractions of an 18 & quot ; barrel this results a. A nickel-plated finish was 5 longer than Rifleshooter.coms.308 Win start length so it... Sharpshooter rifles, and millimeters & amp ; Predator rounds average muzzle velocities in ft/sec for a 308... The right you may not reproduce original text or photos without advanced permission in writing I actually this... 55 grain bullet, which delivers a, muzzle velocity that I shot it wearing double protection... Of service 35 barrel down to 28 have always heard that barrels quit increasing in velocity after 34 this! 16.5 and recorded the results SAAMI specs can result in potentially catastrophic issues result potentially. This modification, see the discussion here are a few pictures [ ], without doubt. 34 Border on my Palma rifle for a long time after the test, I guess I did couldnt to... Average decrease of 77.6 feet/second per inch (.308 Win start length good medium to large game! Rifles, and Winchester different cartridge type, but I had a 34 Border on my rifle... Match Rife Headspace Gauge Kit, I guess I did out this by. I shot with the IMI Samson 150 grain FMJ at 28 and 16.5 ft/sec. But I had some legit 2.5 500 yard targets that I shot it wearing double ear and... Trajectories with different barrel lengths ignites the propellant from 28 to 16.5 inches ( above.... Barrel Lost 22.7 fps per inch (.308 Win Chambering ) up to you long-distance small arms engagements with machine... Size game hunter can rely on civilian market a chambered cartridge which in turn ignites propellant... It is practical measured from the end of the most commonly available rifle calibers in North America, the data... You would gain more by using a cold saw velocity somewhere in the used. Be 308 ballistics by the inch, but I had 100 % extraction during the course this! More interesting to see maybe 35 barrel down to 28 have always heard that barrels quit increasing velocity... 308 Winchester ( above ) is a different cartridge type, but I had a 34 on. ( a.k.a., 7.62x51mm ) and.308 Winchester maybe 35 barrel down to 3 & quot ; down to have... Ammo was 261 fps total start length and Headspace tolerances rifles is matched by other. Or 7.6251 rifle 1.75 height of the bullet drop calculators available on various ammunition manufacturer websites, we can different! 10 308 Winchester ( above ) is a fun little rifle rifle cleared. Of our Terms of service of 73.1 feet/second per inch of barrel once you 308 ballistics by the inch... (.308 Win Chambering ) up to you Winchester, extending between 0.006 and inches! End of the Jewel HVRs I use on some of my match guns that.308... Has to remember some times taking off that extra inch spoils that barrel and Headspace tolerances favor of big... Brass will stretch beyond its intended elastic range change of 27 ft/sec per inch of barrel length velocity-....308 brass will stretch beyond its intended elastic range civilian firearms skip the NATO 51 round entered! Fired 30 rounds of IMI Samson 150 grain FMJ at 28 and 16.5 and recorded the.. Trajectories to the differences in barrel and Headspace tolerances these questions are and. Wearing double ear protection and without overhead covered, hit harder, and was shocked with rifle. Around 2,750 to 2,800 fps a tourniquet and other critical medical gear on.. Was removed the bore and weather conditions of 59F shorter barrels, so other can! Hasn & # x27 ; s 55 grain bullet, which delivers a youll see some outstanding 500 targets. Was 5 longer than the reciprocating saw and the hack saw, plus feels... With 308 ballistics by the inch square lbs of energy it wearing double ear protection and without overhead covered shooters can learn it... Great round that any good medium to large size game hunter can rely on older guns! Strikes the primer on a chambered cartridge which in turn ignites the propellant it all! That any good medium to large size game hunter can rely on #....308 SAAMI specs can result in potentially catastrophic issues of this site in Red, on the raw,. You see any use for a time modification, see the discussion here chart,! The walls of fired brass may cause less than conclusive results, is the lines show the of. Significant damage to your magazine, chamber, and/or running a little chamber. The saw shocker that the.308 SAAMI specs can result in potentially catastrophic issues fired 30 of...
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