03-22-2021, 05:42 PM
Thanks guys. In this case I think it was probably just an old brittle bolt that was sitting around as a spare after serving another barrels useful life. Load was mild and is undergassed (bolt won't lock back with it on empty mag due to frozen gas block adjustment screw), scale works fine - I've loaded and shot hundreds of rounds for other rifles (including 90 rounds in my 6.5CM at a PRS match where I came in second in the Gas Gun Division behind Rob Leatham (okay, we were the only 2 gas guns, but I still get to say I came in second only to Rob Leatham! (and my 71 was respectable))), no extreme temp (plus I was using H322), and I was 0.05" off the lands.
Maybe it is something with with the x39 brass and LRP - my 243 LBC doesn't have a problem with it though. Maybe the case head with an LRP only likes a 0.125 bolt face depth. Or maybe my barrel extension got damaged (somehow previously, or durning the first shear). It's moot though - my commitment to 6.5G has been tenuous since I moved to a warm climate and have been unable to find a temp insensitive powder that works with 123s. That, combined with a complete lack of suitable projectile availability for the cartridge had me planning on shooting my stash of 85 grain Sierras in x39 brass with LRPs and then reassessing when they were gone. How silly is it that I've been shooting a bullet with a BC below that of a .224 55 gr FMJ out of a rifle with an Elite Tactical HDMR2 with an H59 reticle?
The only decision I'm let with facing is if I want to go with a .223 barrel or 6 ARC. As Roland Deschains would say, "the world has moved on". In target bullets, the only projectile technological development there's been in bullets suitable for 6.5G since I got into it has been Sierra putting a tip on the 107s (unless one considers Hornady replacing the melting Amax tip a technological development) while strides have been made with high BC .224 and 6mm target bullets.
Maybe it is something with with the x39 brass and LRP - my 243 LBC doesn't have a problem with it though. Maybe the case head with an LRP only likes a 0.125 bolt face depth. Or maybe my barrel extension got damaged (somehow previously, or durning the first shear). It's moot though - my commitment to 6.5G has been tenuous since I moved to a warm climate and have been unable to find a temp insensitive powder that works with 123s. That, combined with a complete lack of suitable projectile availability for the cartridge had me planning on shooting my stash of 85 grain Sierras in x39 brass with LRPs and then reassessing when they were gone. How silly is it that I've been shooting a bullet with a BC below that of a .224 55 gr FMJ out of a rifle with an Elite Tactical HDMR2 with an H59 reticle?
The only decision I'm let with facing is if I want to go with a .223 barrel or 6 ARC. As Roland Deschains would say, "the world has moved on". In target bullets, the only projectile technological development there's been in bullets suitable for 6.5G since I got into it has been Sierra putting a tip on the 107s (unless one considers Hornady replacing the melting Amax tip a technological development) while strides have been made with high BC .224 and 6mm target bullets.
Let's go Brandon!