The big revolver will push a 300 grain xtp mag over. Webapr 7, 2017ย ยท out of your s&w revolver lead bullets exceeding 500 grains leaves little room for powder. Webjan 22, 2010ย ยท as to light loads in the s&w. 460, lee martin's recommendation to save. 460 brass for. 460 work reinforces the s&w/ruger dictum:

Increase to a maximum powder charge of 42. 5. I find lead in 360 grain range performs best (gas checked). Shoot. 38 specials in your. 357.