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300blk crimping.

Really? I thought using a lighter bullet, seated lower and crimp, it would be extra pressure. Thats why I started 10% below minimum because Hornady wanted me to do 11.8gr of H110 for 150gr FMJ at 2.220" (1500FPS) which don't even make sense because that would mean the bullet itself would only be seated into the neck like .100". Also that would interfere with magazine ribs. The hornady 150gr bullets are really short like the 147gr pulls. What I did was do 10.8gr of H110 with 147gr seated at 2.115" and thats making .250" or more contact with bullet and neck. I measured my COAL for the 150gr hornady anyways and they measured at 2.065" so if I loaded by Hornady's 2.220", it would have gotten jammed. The 147gr measured at 2.198".
 
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