I have a TC Seneca in .45 with a 1-48" twist. The Seneca is a lighter gun, won't take some of the heavy loads a full size Hawken / etc will handle, but even at that, my gun likes reduced loads. I generally shoot .440 round balls with pre-lubed patches and 65 grains of Goex FFg -or- home cast, pan-lubed (SPG) Lyman / TC maxi-balls with 70 grains of Goex FFg. I've shot the PRB up to 90 grains and the conical to 80, book max for both, and accuracy is considerably worse. The conical load pretty well matches a heavy .44 magnum load from a revolver ... 245 grain bullet at about 1400 fps. The gun is light enough to bruise you a little after only 2-3 shots with the conical load. Brass buttplate does not compress much so your shoulder has to.
I've got some saboted bullets I was thinking of using for coyote / cougar in the winter where there are no restrictions on what sort of projectile I use but I haven't gotten around to testing them.
Tom
