If that's the traditions that I was posted about earlier today, it's got a 1:28". I would load to 100gr max with the first shot (probably both), and go ahead and use whatever sabot shot most accurately. Most sabots fit tightly enough that you shouldn't have any issues with movement from the first shot. I don't know that I'd try powerbelts, as they seem to load more easily and 'might' move on the first shot (though I still doubt it). I would suspect that if there were any issues with loads moving that the owner's manual should have some warning. Please be sure that it doesn't have any caveats about what you can and can't use. Congrats on the gun! While not what I'd think of in any traditional sense for hunting, it is a very attractive gun.