100 or 150 gr. pellets?
go with loose. lot cheaper and get more shots.
with the rest, I have not hunted with powerbelts, I have only worked with them at the range.
I am working with 295gr hp powerbelts out of my knight usak with 75grs of loose triple 7 2f. also worked with 245gr hp with 85grs of loose pyrodex rs. most of my shots are going to be less than 100yrds.