Traditions Smackdown MZX 50 Caliber 290Gr Muzzleloader Bullets - 15 Rounds - The Smackdown MZX bullet is a great choice for those who prefer a sabot-less projectile or may be in a state where you cannot use sabots and don't want to compromise on performance. The performance-proven Smackdown bullet line delivers unparalleled accuracy and are the best muzzleloading projectiles on the market.