Barnes TSX Rifle Bullets .338 Boat Tail 185 grain 50 Bullets/Box Copper. 50 caliber pistol these Barnes Triple-Shock X Bullets (TSX) are designed to penetrate dense bone and tissue. Made with an optimized time-tested nose cavity the TSX produces four razor-sharp petals that penetrate deep into the body of the game where it creates a devastating one-shot kill. The specially engineered bonded hollow point retains 100 percent of its weight and because it's copper the TSX is resistant to degradation of the propellant. With its thin profile these bullets expand reliably on impact before they start to shed their weight. This extreme vulnerability allows the X-Bullet to retain 100 percent of its weight. Upon impact these Barnes .338 Rifle Bullets generate enough energy to break down large game such as elk mule deer and moose. Specifications for Barnes TSX .338 Rifle Bullets: Manufacturer: Barnes Gun Type: Rifle Bullet Type: Boat Tail (BT) Projectile Caliber: .338 Caliber Diameter: 0.338 in Core Material: Copper Jacket Material: Copper Bullet Quantity: 50 Bullet Country of Origin: USA Fabric/Material: Copper Package Contents: Barnes TSX .338 Rifle Bullets Barnes 30408: TSX Rifle Bullets .338 Boat Tail (BT) 185 grain 50 Bullets/Box Copper