Barnes Bullets TSX 30 Caliber .308 168 GR TSX Boat Tail 50 Box. Made with a 100 percent copper body the Tri-Shock X expands on impact breaking up into four razor sharp petals that penetrate through thick bone and tissue delivering a one-shot kill. Upon impact the TSX retains 100 percent of its original weight and expands to deliver deep penetration creating a nasty wound channel that quickly forces the animal to release its entrails. Retaining 100 percent of its original weight the TSX is an excellent choice. Specifications for Barnes Bullets 30351 TSX 30 Caliber .308 168 GR TSX Boat Tail 50 Box: Manufacturer: Barnes Bullet Type: Boat Tail Hollow Point (BTHP) Hollow Point (HP) Bullet Weight: 168 grain Projectile Caliber: .30 Caliber Sectional Density: 0.253 Condition: New Bullet Quantity: 50 Bullet Country of Origin: USA Housing/Frame Material: Copper Fabric/Material: Copper Package Contents: Barnes Bullets 30351 TSX 30 Caliber .308 168 GR TSX Boat Tail 50 Box Barnes Bullets 30351 TSX 30 Caliber .308 168 GR TSX Boat Tail 50 Box