04-20-2021, 08:19 PM
StoneHendge Wrote:Nonetheless, I wouldn't view their extractors as upgrades.Right. I came to that conclusion about the BRA extractor after reading Ballistic Advantage's specs. They are made of the same steel anyway. At $20/each I'll settle for no worse I suppose. I'll buy two of them. And as already said, pick up one of BFT's bolts ASAP.
My old 22" JP 6.5G with RLGS couldn't get close to 28 grains of XBR with 123s. Pressure may be why your extractor broke.
I agree with you on the XBR load. Shots began behaving strange above a certain loading. Somewhere around 27.6 gr the bolt started to lock back partially. And brass path changed from the normal 4 o'clock direction to more of a 2-3 o'clock direction. And the groups began opening way up.
So, looking at my targets and fired brass this morning, I came to the conclusion that with XBR I would not go beyond 27.3 gr again. That group was a respectable .8", even if average velocity was only around 2390 FPS.
Of the four powders I was testing, I think I was most impressed by TAC. AA2520 didn't do so bad either.

