maineac,
Power belts have done the job for me.
.
This is a 295 grain .50 cal powerbelt copper clad Hollow point I recovered from a buck I shot last Muzzleloader season. It was around a 90 yard shot from a steady rest. I was using a Lyman's Great Plains Hunter and 90 grians of Pyrodex RS. The animal was quartering away slightly. I found this bullet lodged behind the far shoulder. The buck ran about 45 yards before he expired, The blood trail was a little spotty for the first 20 yards but was impressive for that last 25. I will agree that the Powerbelts do fragment, I don't think that is necessarily a bad thing. The Powerbelts are fairly good shooters out of my gun, I Almost get my shots touching at 50 yards. Hey It was my first Muzzleloader kill. I was very Happy.
Jerry