I agree Tom. So far I have taken quite a few deer (and one Hog) with a ML shooting: 177 grain patched roundballs, 295 & 348 grain AeroTip Powerbelts, 370 grain TC Maxiballs, 250 grain Hornady SST's, 300 Grain Barnes MZ Expanders & the 460 grain No Excuse conicals. (All 50 calibers)
Of the 7 bullets i killed deer with there was only one which I wasnt pleased with its performance....the 370 TC Maxiball. On deer sized game I got no expansion whatsoever. A very accurate bullet that I think would be outstanding on Elk & larger IMO.
The other 6 bullets performed very well for me & I wouldnt hesitate recommending them. Got good penetration & decent expansion. Much has to do with hit & fps your throwing bullet at. With 90 grains 2fg Goex out of my TC Firestorm flintlock the 295 Powerbelt expanded on 2 deer I killed with them. I did catch some ribs & spine though on both high hits shooting down from treestand. Hope to try some shorter 245 PowerBelts this flintlock season. I shot the 348's out of 1-28 twist in-lines.