Good luck to everyone! Tomorrow!!!
I use a 348 with 100 grains of Triple-7. I've taken five deer with Powerbelts, and they've always worked very well. Minimal damage to meat and bone, but excellent knock-down power. I've never had them fragment, even at a shot of 20 yards. I know 348 might be a bit heavy, but at the range I shoot (out to 100 yds), it hasn't seemed to matter in terms of trajectory.