That particular load is with the Lee group buy mold of years ago, a copy of the RCBS 230 CM, @ 235 gr, sized .452, driven by 5.3 gr WST and does 800 fps from that gun. The same load shoots great from my other old models 4 5/8 and 7 1/2. I have found the Ruger 45 Colt guns to shoot better than the shooter. The outliers in the targets were all called when the shot broke.