Barnes Bullets TSX 270 Caliber .277 110 GR TSX Boat Tail 50 Box. Made from 100 percent copper the projectiles are designed to retain 100 percent of their original weight and deliver a one-shot takedown on big game. The X-Bullet is made to handle the broad range of calibers and weights in a particular way to achieve the best accuracy and performance. For reloaders the name Triple-Shock is quickly becoming synonymous with quality. With it's ability to hold extremely accurate shot placements and its accountability for delivering results the name TSX is a trusted name in the industry. Specifications for Barnes Bullets 30260 TSX 270 Caliber .277 110 GR TSX Boat Tail 50 Box: Manufacturer: Barnes Bullet Type: Hollow Point (HP) Boat Tail Hollow Point (BTHP) Bullet Weight: 110 grain Projectile Caliber: .270 Caliber Sectional Density: 0.205 Bullet Quantity: 50 Bullet Country of Origin: USA Housing/Frame Material: Copper Fabric/Material: Copper Package Contents: Barnes Bullets 30260 TSX 270 Caliber .277 110 GR TSX Boat Tail 50 Box Barnes Bullets 30260 TSX 270 Caliber .277 110 GR TSX Boat Tail 50 Box