This was the first year I tried Powerbelts...3 shots later, here are the results:
1. Cabelas Hawken, 85 gr loose Pyrodex, 295 gr Aerotip- 10 yard shot, contacted bone, complete pass-thru, dead buck
2. Winchester Apex, 130 gr Pyrodex pellets, 338 gr Platinum- 150 yard shot, contacted bone, complete pass-thru, dead buck
3. Winchester Apex, 130 gr Pyrodex pellets, 338 gr Platinum- 10 yard shot, contacted bone, complete pass-thru, dead doe
Maybe I was just lucky, but I'm satisfied so far. Like others have said, go with a heavy bullet for the velocity you are shooting, and I would think you'll be OK.