One of the members at my club shoots a 45/70 repro (not sure if Sharps or Hi-wall) and wants to try cast and casting. He is currently shooting commercial cast .458 350 gr bullets and accuracy is only so-so. Wondering if any of the Lee bullets might be an option to try, he doesn't cast right now and will use my casting set up to start. No idea as to bore size as the barrel hasn't been slugged.