The shoulder is moved forward, but the shoulder angle and case taper is the same as the parent cartridge. Many of our readers have been interested in the 6mm Improved (BRX, Dasher etc. The guys at Breach Bang Clear posted a video on their instagram page. The new gun exceeded Richards' expectations right from the start. An absolute gaggle of folks in PRS/NRL started shooting 6mm BR cartridges the last two seasons, largely motivated by ease of tuning (any Varget, 4895, or 8208 load will likely shoot well), better barrel life, and lower powder consumption. [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. Participant. Caliber: 6 Dasher (6mmBR Improved) Barrel: Broughton 5C, 1:8 twist, stainless, 30" finished length, contour 1.250" straight cylinder: Reamer: Dave Kiff of Pacific Tool and Gauge – 6 Dasher, 0.272 neck, 0.110 freebore Receiver: Remington M700 right hand stainless short action. I am curious to peoples opinions on that. I am looking at building a 6mm BR or should I look at a 6mm Dasher and what twist barrel? For two years, Forum member John Skowron (John708) has been campaigning a 6BRX, built by Nat Lambeth (RustyStud). Richard’s barrel had over 2000 rounds through it. We have shot 9 to 10 thousand rounds through the Dasher. I've always been told 243 & especially 243 AI are barrel burners. I haved tried loads from 31.5 to 33.5 of RL15 and they all shot well @ 100 yds.
I’m now shooting a cartridge that has the same or better barrel life than the 260 Rem, it’s more accurate, with essentially equal wind drift. To comment on a post, click Post Title or "Comment" Link. This way you can use standard dies for most purposes (although it is a good idea to have a custom full-length die so you can size the entire case body). Looks like the GAP clan is releasing another new cartridge. The 6BR Improved cases represent a “sweet spot” for the tactical game, offering outstanding accuracy, with less recoil than bigger cartridges, including the 6.5 Creedmoor. If this development strikes you as the opposite of progress, you might have spent the bulk of your life in the 20th century. ), but they’ve wondered about case durability and barrel life. ]Share the post "6BRX: Long-Term Accuracy and Barrel Life Report"
Note: Your browser does not have JavaScript enabled. John has answers for those questions:Achieving this barrel life goal pretty much completes my 6mm BRX project. What sort of velocity should I expect? Just wondering what kind of barrel life I could get from these. The 6mm bore diameter had all but faded by 1955; the only popular 6mm cartridge prior to the release of this pair was the 6mm Lee Navy cartridge, and that cartridge was virtually obsolete by the 1930s. Yes the 6mm Creedmoor and 6XC can push heavy 6mm projectiles faster to be sure, but there is a trade-off in barrel life. The Dasher alternative. I'll be shooting the 87 gr VMax's. I have been told that a Dasher will reach around the 2950fps mark, and that is pushing them. I have about 1700 rounds through it, and it is still shooting great. Dennis Gray. Step 2 – Neck-down just part of the neck – to 6mm (to hold the primer firmly against the boltface in your longer Dasher chamber). Remember: Using others' images on the web without their permission may be bad manners, or worse, copyright infringement. The downsides with the 6BR/BRX/BRA/Dasher: • Fireforming required for most • Limited velocity potential My rifle is a Panda with a 28" barrel, I am shooting 107MK's and using 33 grains of RL-15.
Just thinking 6x47 Lapua vs 243 vs 243 AI in terms of barrel life. You’ll find the full history of John’s 6BRX project in this The 6mm BRX is based on the 6mm BR cartridge. (assuming you are running a tight-neck – which most Dasher shooters will do). July 10, 2014 at 3:20 pm #1638. Step 3 – Neck-turn the 6mm portion of the neck. 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 first barrel was replaced at 3500 rounds.
Hi I am currently shooting a 6mmDasher, and I have a couple of questions. That was the era of increasing muzzle velocity. The throat has moved out about 0.075" from new. It was the wildcatters who brought it back to life by fiddling with a couple of popular designs. Many features may not work properly without it. Receiver is blueprinted; single point chasing of the receiver threads, locking lugs, and receiver face.
I’d bet the barrel life would still be abysmal (likely 500-1000 rounds) because that cartridge would be extremely overbore. Looking at the 6x47 Lapua it looks like it would be as well so just trying to figure out the lifespan of the barrel. Large images may take a few minutes to appear. Borescope tells me that I'll get some more before a set-back is called for. ALL Bulletin content is copyrighted, © 2020 AccurateShooter.com. Alpha will be making the brass. L. to R. are 243 Winchester, 6mm Remington, 240 Weatherby Magnum.
John has answers for those questions: 6BRX Case Life Case life running the Berger 105s at 3000+ fps is 14-15 reloads.
Mid-20th Century 24-calibers shoot much faster than the new Hornady 6mm ARC, but are they ballistically better?
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