The Hornady Bore Driver Muzzleloading Bullets 50 Caliber 290 Grain FTX Pack of 20 is a fast and easy to load bullet that delivers the ultimate in muzzleloader performance. At the heart of the system is a polymer base (not a sabot) that seals the bore to deliver maximum energy transfer and accuracy. Atop the base is the FTX bullet, featuring a rugged gilding metal jacket coupled with patented FlexTip technology and an InterLock ring that deliver maximum lethality. During this muzzleloader season, make the shot count and use the best - Hornady Bore Driver FTX!FeaturesPatented FlexTip technology bulletsSeats quickly for shot after shot performanceInterlock ring to maintain maximum on-game lethalityPerformance Boosting Base