Certainly check the bullets. I have seen plated run 0.354" in some 9mm brands. Some brass won't hold a bullet only 0.0005" smaller. It's never about the crimp but the neck tension. Measure the powder thru expander, just in case a bad one got by Dillon. It shouldn't be larger than 0.354".
"Given adequate penetration, a larger diameter bullet will have an edge in wounding effectiveness. It will damage a blood vessel the smaller projectile barely misses. The larger permanent cavity may lead to faster blood loss. Although such an edge clearly exists, its significance cannot be quantified".
Last edited by fredj338; 12-20-2011 at 23:17..