Ar 15 16" Barrel 75 hpbt
I am trying to work a load up using mixed LC brass,Varget, Fed 205 primer and either Hornady 68 and 75 HPBT.
I have tried numerous powder charges from 24.3 to 25.5 grs. Any load of 24.8 grs or more, the dies are denting in the bullets close to the olgive of the...