Swift Bullet Company .54 Caliber .429 AFHP Muzzleloader Sabot Bullets 325 Grain 10 Bullets. These bullets have been specially designed to deliver precise dimensional tolerances which ensures improved accuracy in the field. With a proprietary blend of lubricant added to the polymer these Swift Muzzleloader Bullets are easy to start and super tough. The rear core of each bullet is protected by a thick copper jacket and the nose of each bullet has a large frontal area with six cuts to deliver fast expansion in a wide range of velocities. Specifications for Swift Bullet Company .54 Caliber .429 AFHP Muzzleloader Sabot Bullets: Manufacturer: Swift Bullet Company Projectile Caliber: .54 Caliber Quantity: 10 Bullet Quantity: 10 Bullet Fabric/Material: Copper Package Contents: Swift Bullet Company Muzzleloader Bullets .54 cal .452 AFHP Swift Bullet Company 543255: .54 Caliber .429 AFHP Muzzleloader Sabot Bullets 325 Grain 10 Bullets