Berrys plated 148 gr hbwc bullets are hard on the barrel & build more pressure. The plated bullet is long & the lands dig .oo4 to .oo5 into the plated surface. The 52 was made to shoot lead. You can get a hard 148 gr dewc or a 141-148 bnwc & turn backwards--& sized to .356 with 3 gr of bullseye--clays--titegroup--or the new E3 If you wont it a little faster. You can test these loads out of a revolver before using them in your 52. They shoot fine. I shoot 300--450 rounds a week.