I tried some power belts and had decent accuracy but I’m not crazy about their penetration, or lack of at high velocity. I’ve had the best luck with XTP’s in crusher rib sabots. The crusher rib load the easiest of any sabot I’ve ever used (though definitely as easy as a power belt) and give excellent accuracy. I also always get great results with Lee R.E.A.L. Bullets. They load easy, hit hard and are very accurate but to my knowledge they are not commercially available and you have to mold your own.