.38 vs .357 Cowboy Loads
I have been trying to work up a light cowboy action load. I have settled on 2.5 grains of PB with 125 truncated cone lead bullets. Shooting them in Beretta Stampede revolvers. I find that the same load in the .38 cases seems to produce tighter groups than in the .357 case. Any ideas why and has anyone had similar results?