My load: 180 gr HC FP (.401) from Hunter's Supply, 10.5gr BD, CCI LPP, COAL 1.256-1.260, Starline brass (not virgin). I was zeroing this same load @25 yds except that I was using 180 gr Precision Delta FMJ's. The FMJ's grouped well but not the HC's. I chambered a round and verified that the COAL did not decrease (thought maybe it was a pressure issue). BTW: the gun is a Coharie CA-89 SBR with an 8.85" barrel. I've not slugged the barrel. This is my first HC lead load. I do have a box of Lasercast RN FP (.401) that I've not tested yet. Hoping for a good HC feral hog load.