I'm not telling you what to be concerned about, but we should all verify that we have a clear and safe shot opportunity before pulling the trigger. That said, I want full penetration with a muzzleloader. IMO, selecting a bullet that is not likely to provide full penetration is the wrong way to go.

When you are shooting deer with projectiles that are already 45 cal. and bigger, there is no real need for expansion. Penetration is where it's at. Punch a hole through the vitals/shoulders and he's not going far.

A bullet that will not pass through can't be used for some angled shots where a good deal of penetration is needed before the vitals are hit.