Hodgdon "Basic Reloading Manual" has loads for .38-40, .44-40, .2-40, l38-55, l40-65, .45-70, .45-120, and .50-140. I got my manual free at my gunshop; Hodgdons would probably send you one free.

Their .44-40 and .25-35 (yeah, I know it never was black powder) Trail Boss loads interest me. Haven't tried it yet; not easy to find Trail Boss around here. I was lucky to score a can of 'Lil Gun recently.