RE: Question about Pwr Belts
Theoretically, they will shoot the same. However, I've noticed that when shooting the 348gr leads and the 348gr jacketed aero-tips - I have to reduce my load 5 to 10gr for the lead bullets in order to keep my accuracy up. There is a ballistic difference with the aeros that is not evident with the plain jacketed model, so it's hard to say that this will aplly in your case.
I would expect the lead bullets to travel at a very slightly slower speed than the jacketed model, since copper is slicker than lead. But I doubt than this difference would equate to more than a 5gr change in lowder load.
Only one way to find out for sure - shoot both at the same target and see how far apart the holes are.
As far as performance on game goes - the lead projectile is less likely to pass all the way through the animal than the jacketed one is....especially at distance. Both should expand well out to 100yds - past that then the jacketed model is probably the best.
"Every moving thing that liveth, I give unto you as meat" (Gen 9:3)
Trust God..........but keep your powder dry!