Well, I have always had great luck with the 385 br Buffalo bullets over 90 gr of Pyrodex RS. In my inline's I shoot 300gr SST over 120 gr Pyrodex RS and I have killed some farely big deer, black bear, and hogs with that load. My son shoots 250 SST over 100 gr of T7 and has had great success. I have no personal experience with the PowerBelts, but I have taken a few guys on some hunts with their ML's and I have seen those fellers get sick at their stomach's as the buck of their dreams run away. If I type some jumbled stuff here please forgive me. I have taken my meds and I have a tendency to flap in the breeze. I suppose that I would not use the PowerBelt based on opinions. I'm not quite sure that is a fair choice but its gonna be mine...LOL