I have been shooting Keith style #429421 Lyman
at 1200 fps for many years out of a 4 inch Model 629 Smith and Wesson with no problems.
I am ready to shoot 44 Special loads now that my son bought a Ruger Gp100. I think it would simplify things if we both shot the same ammo.
Put that 429421 on top of 7.5 grains of Unique. Skeeter told me.
