DO NOT DO THIS!!!! DO NOT DO THIS That said; I've been loading .38 cal. berrey's bullets into, reformed for 357SIG, .40 S&W brass using Federal Magnum small pistol primers, using 6gr. of Bullseye powder. It works for me in my LWD conversion barrels in my Glock 29 and Glock 27. No bullet set back with those .357 plated bullets and fairly accurate at 50ft. lBUT DO NOT DO IT! DO NOT BE ME!