anyone have experience shooting the powerbelts? I have heard mixed reviews on these, but wanted to try them out. i was out at the range on friday afternoon with my nephew, but I only got a chance to bore sight and take just a few shots. It is getting closer, but need some more time at the range to see if they will shoot consistently. what do you guys think of these powerbelts? I know I like the way they load...much easier than the sabots.