.38 Long Colt

Things are just a bit complicated here because of the hollowbase issue. My 150-gr., .358" hollowbase bullet design is cast of pure lead in a mould by the now defunct Rapine Bullet Mould Company. I know of no other outfit making a suitable hollowbase .38 cast bullet mould. Old Lyman hollowbase .38 moulds can be found on the Internet with a little searching though. Loaded over 3.0 grs. of Bullseye in Starline brass, the 150-gr. hollowbase shoots nicely from my Colt 1861 Conversion’s 7½" barrel and just barely breaks 700 fps.

That’s not all. When feeling especially energetic about gun cleaning I’ll sometimes shoot this sixgun as it was used in the 1870s — with black powder. A charge of 17 grs. Goex FFg with the Rapine bullet gives 750 fps.