I'm one of those SOB's with a savage inline that shoots smokeless. I cant disagree thats a better rifle for killing deer 300 yds away than a flintlock. The point around here is to kill the deer, and many of them as possible. BP is a very fast burning powder, and pressure can exceed some smokeless loads. Slower powders are a good way to keep pressure low and velocity up, but they are much harder to ignite than bp. Thats where the problems can come in.