Your gun will handle elongated projectiles, like various bullets in sabots, or full bore-size bullets like Power Belts, Maxi-balls, Buffalo Bullets, Hornady Great Plains bullets, etc. The regular Maxi-ball has a reputation for very deep penetration but little expansion, even though made from pure lead. If you hunt deer, use a Maxi-Hunter or one of the lighter Power Belts, whichever is most accurate in your gun. For elk and bear, use the plain Maxi Ball or some other heavy conical, like the Power Belt, in a weight of over 400 grains. Choose the best bullet for your gun by shooting trials, and select the one that shoots best, in the design you need for whatever game you are hunting.