Thompson Center Bore Driver Features The Thompson Center Arms Bore Driver is built around the Hornady FTX bullet design a polymer tipped projectile engineered to flatten trajectory and expand reliably on impact. At 290 grains and .50 caliber the Bore Driver is sized to deliver serious knockdown power for big game hunting with a muzzleloader. The FTX profile is designed to load quickly and easily down the bore reducing the time and effort needed to seat a bullet compared to traditional sabot style projectiles. This ease of loading can matter in the field when a hunter needs to reload quickly. Each box contains 20 bullets organized into four 5 pack speed loaders letting hunters pre stage multiple loads for faster reloading between shots in the field. Made in the USA the Bore Driver reflects Thompson Center s long history of building dedicated muzzleloader components. Because these are reloading projectiles rather than assembled ammunition they must be paired with the shooter s own powder charge and primer system. For muzzleloader hunters who want extended range performance and dependable expansion the Thompson Center Arms Bore Driver is available for sale at GrabAGun. Thompson Center Bore Driver Specifications Manufacturer: Thompson Center Model: Bore Driver Caliber: .50 Caliber Bullet Weight: 290 gr Bullet Type: Hornady FTX Quantity: 20-Count Available At: GrabAGun