powerbelt aerolite bullet are a great bullet and they do a great job, I have not played with them very much, so I can not say very much about them.
In my MR I shoot it sabotless and have had great accuracy with Hornady and the Barnes bullets, My season starts the 6th of Dec so I hope to see how they do, Other wise I have been shooting the Hornady 452, and the 458/250 gr Monoflex bullets.