I have a friend who owns and shoots a Long Land Pattern Bess and likes it, but does not hunt with it and instead prefers a Jaeger rifle. On examination, the LLP is a large, stout weapon (barrel about 46 inches on his India-made one) that packs a fair bit of punch and recoil. It is about 60-61 inches overall. A patched round ball in the caliber (.75-.77-ish bore, .735 ball) should drop a deer at short to medium range, provided you hit the mark.