I'm about to embark on yet another project: loading for the .50-70. The rifle is an original U.S. M1871 RB with a perfectly new bore, the grooves of which measure .3165. I'd like to find someone who can provide a sizer die of .517"/ .518" diameter (I could make one, but don't want to - time being the real problem). Buffalo Arms offers custom lube/sizer dies, but can't make one over .515", they say. Any help? Thanks:
mhb - Mike