This gun has a 1:24" twist. It's not the Traditions O/U double, it's the Kodiak SxS. You can see one in the Cabela's online.
RiverOtter, you're probably right about the Powerbelts. Actually, the Powerbelts is what got me thinking about loose projectiles because they are so easy to ram in.
I like Semisane's idea. Think that's what I'll try with a couple different bullets.
Thanks guys!!