T by G's post above captures the simplicity of my 50+ year Texas hunting experience... I was brought up in a strict regimen where if you point a gun something dies... right now, and no excuses.
High shoulder shot, 30/30, cast bullets at 1700-1900 fps, cast soft, hard or in between.
Bang flop...pigs too.
Expansion? Who cares? Penetration is complete. Shoulder bone structures, spine, high vitals, and connective tissue disruption with a single shot means DRT... I've never recovered a boolit from a critter, but never had to trail one either.
Put the bullet where it counts, and you'll never chase a critter beyond it's own shadow.
Can't make the shot? Then don't take the shot.
It's that simple.