I shoot the Hornady 68gr. HPBT's with 25.4gr RL-15. Average is 3,020 f.p.s. I am using L.C. brass and CCI Benchrest primers. Lee Factory Crimp Die. I would start at 24.8 and work up. The reduced loads for the Lake City brass is because of the thicker wall ie. less powder capacity, but I have...