I figure Rem 7 1/2 are a safe bet, but there's not much info available. CCI-BR4's are probably just an unneccessary expense if cheaper options perform just as well. What's everybody using? (small rifle primers)
It's a wildcat so not much data out there outside of the few boards that look at odd chamberings. It is high pressure so the 400's and 6 1/2's just fail easily in the AR platform. Thin walls son't work. Every published load I have put up was with 7 1/2's or or 450's. It's just a very close volume duplicate to a long PPC and that makes them cook. You can use ANY PPC data for the 6X6.8.
The guys that developed this shoot only 7 1/2's and 450's and probably shoot as much as anyone on the planet. You could shot some CCI 41's if you had some but the BR4's are a waste of money IMHO.
Originally Posted By: CZ527Several of my benchmark loads preferred a BR4. I don't know much about ARs so I'm not sure if those are safe in there or not.
BR4's are fine for the AR just overly expensive for nothing gained that I can see for the price.
I've run some of the cheap Wolf primers. Seemed to work just fine. Getting some of my best groups with them, anyway. Not sure about their thickness or AR performance in general.
I have run them all the SRP in my small pocket 6.8 brass. I have yet to see 1 better than the other.
fed, r-p, cci 400/450, wolf, S&B, magtech, tula, fiocchi...they all do the job perfectly.
I use CCI 450 in mine. I tried 400's but like the 450's better. Accuracy seemed to improve a bit when I began using them. Ironically, found that my 204 likes the 450's better as well.
Originally Posted By: GLShooterThere are a couple types of Wolf primers. Some are nice and thick while others are not. Here's a good sumation from another site.
Originally Posted By: MerditOriginally Posted By: GLShooterThere are a couple types of Wolf primers. Some are nice and thick while others are not. Here's a good sumation from another site.