For deer and plinking I'd probably choose one of the 300 gr bullets that have been recommended. So far I have only shot the 300 grainers at paper. I've used the Hornady 350 FP on a black bear - worked fine. I've used the 400 gr Speer (hard to find now) on several black bears and a cow elk - worked fine. My brother favors the 405 gr Remington (also hard to find) on deer - worked fine. Seems like the 45/70 and 450 Marlin work well with most bullets designed for their modest velocities. I have no experience with the Lehighs or TSX's but I'll bet they'd be awesome.
