Doc, my rounds are a full case of Goex FFFg. In my opinion, the Big Lube bullet is key. I also have an early Uberti Schofield, a Navy Arms import, and it runs about the same with this load as do all my other Uberti top breaks. They won't shoot all day like a Colt or an original Smith but it doesn't take much to keep them running, even for match shooting. Most of mine will run longer with real black and a Big Lube than with the subs and a conventional, waxy lubed cast bullet