Heck yea!!
Put ya about 150 grains of 777 pellets in there, slab a big ole glop of bore butter on the smallest power belt ya can get your hands on, lighter means better ballistics right!, and cram it down there as tight as ya can, crushing the pellets a bit as you go!!!!

On a serious note. There are all sorts of opinions on the subject of projectiles, most of which can be easily found on this site with a simple search. There is a running thread right now that is on the front page. I know the Barnes bullets are probably difficult to start, but they will probably do you much better in the long run than the PBs.

If you are determined to use power belts, I would suggest using 295 grains or heavier and stay at or below 100 grains of pyrodex. Just a recommendation, but I think you will find it will serve you much better than either the lighter pbs and/or heavier powder charges.

Hank