1935 г. Even when fireforming the new BR cases, it made better than 0.5" 100 yard 5 shot groups over a range of 30.5 to 32.5 grains H4895, with a corresponding range of velocities from 2841 to 3001 FPS. In this post, we’ll look at how a well a high mileage barrel performs. Recoil is a real issue as is barrel life. 02 Nov. Am currently using a 6 BR barrel which is almost boringly averaging 0.3 inch groups at 100 meters. Insert the barrel lapping rod into the bore until it is about 4 inches (101.6 mm) from 1 end of the bore. Some aren't good for 200 rounds, others may go over 2000 and still be better than most. Shot my Br for the first time today. If they are for varmint use he stated that a barrel will last at least twice as long and setting the barrel back once is also an option if not for competition use. WELL WHEN I WAS LOOKING, READING FORUMS, AND TALKING TO DIFFERENT PEOPLE, WHAT EVER THEY WERE SHOOTING SEEMED TO BE THE GUN TO BUILD. The barrel was broken in, and initial fireforming load development was performed. A 243 with 30 grs of powder (3,860) & 62,000 psi comes out about 2,991. The only hitch was making the cases feed and function in a repeater. Push the lap out of the barrel. He said that he never shoots a competive 6ppc past 1200 rounds. Cheers AI: techshooter: Posted 1183521687: Reply with quote #2 I am getting 3050-3070 using 33.0 grains RL-15 and the 107SMK from my 31" Broughton 5C Dasher. This will be my last Creedmoor barrel as I'll be moving to a 6 BR based cartridge next. I have about 1700 rounds through it, and it is still shooting great. Back in January 2017, I wrote 6 Creedmoor barrel length versus muzzle velocity (31 to 17 inches), in which I used a new barrel to gather a data set for varying barrel lengths with 3 different loads. So, accurate and ballistically-efficient smaller cartridges that give long barrel life have a bright future … and I think the 6.5X47 Lapua is going to be a key player in this role. figure of 0.287, and the 7mm an S.D. Barrel is a 28 inch 1:8 Lothar Walther on a Savage 110. Participant. That being said the 6X6.8 is about on the high end of mid way to the 6BR. Precision gun drilled and reamed to airgauge within .0002 inch (2/10,000ths) of proper bore dimension. Lapua Brass 450cci primer 29.5 grains of imr 8208 xbr and a sierra 95 tmk. When you shoot a match lots of shots are fired. That means the barrel wears out in 4-6 seconds of actual firing time. Shots 20 through 30 down the barrel averaged 3/4 inches at 100 yards. The increase in bore area significantly extends barrel life over the 6 mm BR Norma. THEN I FIGURED THE THING TO DO WAS ASK THE BUILDERS. The 6 BR betters the 243 in regards to accuracy, recoil, barrel life and is very close in velocity. U.S. target shooters got wind of this new 6.5 mm cartridge and suggested some changes, such as using small primer pockets for accuracy. The 6×47 Lapua (6-6.5×47 Lapua) is a wildcat created by necking down the 6.5X47 Lapua to 6mm (not to be confused with the 6X47 which is a 222 Remington Magnum necked up to 6mm). The 6 Creedmoor offers shooters softer recoil and quicker follow up shots when compared to the 6.5 Creedmoor. Recoil is also a bit lighter. Similar Posts: 6BRX Barrel Life and Long-Term Accuracy; 6.5 Creedmoor for Tactical Shooters; 6.5 Creedmoor for High Power and Tactical Shooters Muzzle Devices 2-4 Weeks* *Wait times are just an estimate, as tools can break requiring replacement, extending our lead time by 6 to 8 weeks or more The 6.5X47 Lapua likely gives a significant benefit even at 600 yards over the 6mmBR thanks to the external ballistics improvements in such a scenario. Because of this, high quality factory 6.5×47 Lapua brass is ready to … A typical match barrel retains competitive accuracy for 2000 - 3000 rounds. Customizer. That is when I do not act like an idiot and try and 'will' my groups rather than paying attention to how I am shooting. 152 mm gun M1935 (Br-2) (Russian: 152-мм пушка обр. In fact, 6 of the 9 were between 30.0 and 30.4, so that seems to be the “sweet spot” across a variety of rifles. It is a x-caliber savage prefit 1-8 twist 6 groove 26” barrel. he NEVER sets his B.R. Using simple tools at home you can remove the factory barrel with an AR-15 armorers wrench to change barrels on your rifle. The 6 MM BR is a short version of the 243. Dennis Gray. The most unusual feature of the gun was its tracked carriage, shared by a number of Soviet heavy artillery systems of the interwar period. 10-31-2016, 03:19 AM #5 The 6.5 CM has a a barrel life of 2500-3500 rounds and will most likely need replaced. Dave Emary, one of the lead designers of the 6.5 PRC while he was at Hornady — now a Guns & Ammo contributor — said that the barrel life of the 6.5 PRC loaded with a 140-­grain bullet with about 55 grains of powder is 1,400 to 1,600 rounds. Our RPR barrels take your rifle to the next level of precision. The answer is no. ( Hodgdon quick check) 6X45 easy 5-6,000 rounds. Posted on November 2, 2017 November 7, 2018 by Criterion. Competitive life of a barrel really depends on how good it was to start with. Expected barrel life of a 6X47L? Testing is demonstrating that The 6.5 BR Lapua can drive bullets at the same speeds as a 6.5-284 but with 2-4gr less powder. Stepping up from 6 mm to 6.5 mm gives a clear advantage in wind drift due to the increased BC values available in 6.5 mm bullets. Push the lapping rod forward until the now solidified lead slug, called the lead lap, is exposed. Generally in a BR case the barrel life goes up with bullet diameter other things being equal. [Editor’s Note: Richard Schatz recently won the NBRSA 1000-yard Nationals with a 6 Dasher, a similar 6BR Improved cartridge, but with a 40° shoulder. Realistically the 6X45 would last longer. The 6 BR is about 35 +or - 1 MAX. Cryogenics adds ~2 weeks to base barrel/blank type lead time. The barrel had two rubber caps, one on each end and was coated in protective oil. The 308 guys will sing the praises of long barrel life and the high pressure, flat shooting 6 and 6.5 caliber guys with talk about how much they enjoy their ballistics. barrels back just gets new ones. July 10, 2014 at 3:20 pm #1638. 6X6.8 easy 4-5,000 IMHO. He has to replace barrels about 1500 rounds. Is barrel wear and barrel life a serious concern for 99% of readers? Velocity recorded on a cheap Caldwell chronograph at 2990 fps. Savage Accuracy Barrel 6mm BR Norma. Derek Love is shooting their new barrels in a 6 BRA and reporting to be at 3,000+ rounds and has yet to see a velocity drop (which would be one indicator the barrel is burning out). Carbon Fiber adds 1-2 weeks to base barrel/blank type lead time. Personally, I shoot all three but my favorite is the 6x47 even though it has an expected barrel life of 2500 rounds. Krieger Barrels offers a wide variety of standard and custom barrel contours for bolt action rifles as well as AR10, AR15, M1 Garand, M1A/M14 and service rifles. Cerakote adds ~1 week to base barrel/blank type lead time. At 140 grains, the 6.5 has an S.D. Table seems to be close to correct for a 6 BR and a 25 BR but when I ran a 30 BR it went down. Allowing them to participate in competitions or long range shooting for an affordable price. I shot it in long strings of slow fire, and after about 3 thousand round its performance began to drop off sharply, I didn't measure it again but down to near unusable within the next few hundred. (Бр-2)) was a Soviet 152.4 mm heavy gun, produced in limited numbers by the Barrikady Plant in Stalingrad in the late 1930s. The 6mm BR is a centerfire cartridge created for benchrest shooting.The cartridge is also known as the 6mm Bench Rest or simply 6 BR, and has also developed a following among varmint hunters because of its efficiency. There are two basic variants of very similar dimensions, known as the 6mm BR Remington and the 6mm Norma BR It has and continues to win matches out to 1,000 yards. No chrono. of 0.248, and though the 7mm-08 offers a velocity advantage of 115 fps or so, the penetration advantage would still go to the 6.5 Creedmoor. Tag Archives: 6.5 creedmoor barrel life. Taliv: No idea about velocity. I noticed that they marked the barrel “CBI 1 in 8 twist 6MM BR Norma” three times in a ring around the barrel about 6 inches from the chamber. Pour molten lead into the end of the bore and allow it to harden. My guess is about 28xx fps. I am looking at building a 6mm BR or should I look at a 6mm Dasher and what twist barrel? I'll also explain what causes barrel wear, and how to prolong the life of your barrel. In this article I will discuss what barrel life means to the everyday shooter, and how you will know when your barrel is worn out. This is a bit deceptive, as … Lap the barrel to fine polish the bore. 8 of the 9 shooters were running between 30.0 and 30.6gr of Varget in their 6BR. While these top precision rifle shooters typically run a 26” barrel, 50% of the guys running a 6BR were running a 28” barrel. Richard’s barrel had over 2000 rounds through it.] For example, competitive shooters using a 6 PPC typically replace a barrel after 700-800 rounds, and a 6.5-284 might also need to be replaced before the 1,000 shot mark. UB p.s.6br will have slightly less barrel life than 6ppc The 6X45 is burning 30 grains + or - 1 MAX. The Ruger precision rifle has brought many new shooters into the sport. The 6mm CM barrel life is going to me MUCH shorter. AR-15 & 308 AR, Articles, Bolt Action Rifles, Technical Articles, Vintage Military Rifles What Sort of Barrel Life Can I Expect From A Criterion Barrel? I don't know that for sure but I'm basing it my guess off of shooting a 6.5 CM and having a friend that shoots a 6x47. That means the cost to keep a good barrel on the gun could be 60-70¢ per shot before we even consider the cost of components like match-grade bullets, brass, primers and powder. Learn about Precision Shooting, Accurate Reloading, and advanced shooting skills for competition, hunting, varminting, and tactical shooting. My new barrel I'm running rounds at 2950 to try and get a little more life. The 6X68 maybe 32 + or - 1 MAX. The barrel was a 26 inch savage bull profile criterion barrel on a savage 12 action. 9/10/06. The 6mm BR cartridge and its variants are legendary in the rifle competition world for their inherent accuracy, easy loading, long barrel life and low cost to shoot.
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