I found a load with a 255 gr. rn flat point that my 1873 absolutely loves (.45 Colt). 1 inch 5 shot groups at 50 yards with peep sights. I haven't had a chance to chrono the load yet, but will soon. I want to use it for whitetails. The reason I'm asking is because the load isn't particularly hot, in fact it is pretty mid range. Considering the weight of the boolit, shape and caliber, what is a reasonable velocity for hunting deer. Yes I know it is subjective and I'm opening a can of worms, but what the heck!