Thread: Xbolt SP projectiles

assume..you talking .223?????
benchmark data available online.......
first thing to try....use the OSA loaded round to set up your bullet seating die....eg put loaded round in press,have guts of seater screwed back out,waay back out/up,drop handle to lift ram,let it sit there,slowly screw top of seating die down untill handle starts to twitch..... try seating a round and see how it is for mag length,by doing it this way your olgive SHOULD be close to same distance off lands if projecties are similar shape...it wont be far off anyway.
years since used BM powder but if you have AR 2206h...some where between 24-25 grns seems to be where 90% of people end up..... there is whole thread on this somewhere on here.