Didn't know this! Received my AEC3 en blocs today, picked 6 pre 72 HXP range pick-up brass and tried the en bloc, works! Compare a 65 HXP with a 74 HXP, I can see the grove difference. I have a 71 HXP, 71 and before, groove is narrower, PPU is similar to Pre and 71, so is a FC brass I compared. I guess narrower groove is the spec.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.