I'm going to experiment this year with Powerbelts. I think all the problems you read about Powerbelts blowing up, are shooter error. They can't handle close shots with magnum loads. It doesn't mean they failed to kill the animal, but nobody wants to see their bullet blow up in the animal.
So, instead of the Thor bullets that i'd normally use. I'm going to use the PB Aerolite 300gr with 90gr of BH 209. My hunt will be at 11,000ft in heavy timber. I don't expect a long shot. I have my fingers crossed that the new bullet will perform like I want.
This will be for cow elk. I'll let you know in Sept how it went.