I just picked up a HTC310-225-RN-CE4 5 Cavity PB for 300 blk, and love it, what col have you guys been running, it seems like the bullet wants to be seated fairly deep. And how have you guys been crimping, i have a lee set of dies. I just got the mold broke in and use hitek and h110, and the gun is an ar15 with 16" barrel pistol gas. Any good starting point would be appreciated as this is my first time with semiauto and cast. This mold really seems like a winner.