After powder coating some Lee TL356-95-RF I noticed they measured .360 without sizing so I tried loading 'em in some .357 mag cases with a minimum charge of BE-86. The accuracy was marginal so I tried the next step up the ladder (1/2 grain more) and after loading I noticed the bullets don't seat straight in the case.
Perhaps this is due to the short bearing surface of the bullet? I am using a Lee seating die, and a Lee collet-style crimp die.
I suspect this will never shoot well if I don't get this corrected. Any suggestions?