I have a Rossi M1892 in .45 Colt, which still needs a christening at the range. I'm curious if someone here might have chronographed heavy(ish) loads in theirs and can recall velocities.
Unless accuracy is dreadful (and in no .45 Colt has it been, yet), I'm contemplating a "general purpose" load of 18.0-20.0/Alliant 2400/250 gr. RNFP for the carbine. I'd like to reproduce, at minimum, the ballistics of the .44 Henry Rimfire (200 gr. RNFP @ 1120 f/s), but with a 250 gr. projectile.
I have a feeling that 18.5/2400/250 gr. RNFP will yield this, plus some, but one never knows until the chronograph spells it out. I also know of the variablility of different firearms, even in the same model with consecutive serial numbers, but ANY indication would be of value.
If going SLIGHTLY above this charge weight yields MUCH better accuracy, I'll entertain the notion, but I'm not interested in pushing things harder, just for the sake of ballistics. I'm not trying to create a "short-chamber .45-70, and I know where to find a lever-action Marlin M1895, if I feel the need to mistreat my shoulder.
Anyway, I'd be interested in knowing what velocities/accuracy other .45 Colt carbine owners have obtained, and with what loads. I'm an experienced, conservative, and "ka-boom"-less reloader (these guns are too expensive to have to replace!), so share any data with the assurance that I will treat it with due respect and caution, holding blameless any who try to assist.
TIA