Flatapple, I'm confused . . . do you have an Uberti "Schofield" repro, Wells Fargo model, chambered for the .45 Schofield round ? Or a Colt 1873 repro ?
I hope I have this right. It's my understanding that the original S&W Schofield .45 caliber round will chamber in the Colt 1873 .45 cal. Army models (the "Peacemaker"). They are shorter than .45 Colt rounds, and have a larger diameter rim. Of course, .45 long Colt rounds are too long for the "real" Schofield.
Uberti makes "Schofield" repros with a longer cylinder, chambered for the .45 long Colt round. I have one, as well as an original "Peacemaker", and a '94 Marlin chambered for .45 long Colt.
I've been loading 7.5 grains of "Trail Boss" behind a 250gr. cast bullet for all three pieces for CAS matches. I like the Trail Boss, as it's almost as bulky as black powder. That load is a little peppy for CAS I've been told, but it's pleasant to shoot, and runs about 850 fps.