Barnes Bullets TSX 9.3mm .366 250 GR TSX Flat Base 50 Box. These Rifle Bullets by Barnes have an extra tier of patented technology that makes these the toughest shock-generating bullets on the market. The Barnes 30469 TSX 9.3mm .366 250 GR TSX Flat Base 50 Box features a re-engineered thin-wall design that attains the highest energy retention with every shot. With a tipped Triple-Shock X design these offer the most reliable takedowns possible. Barnes has been producing these types of bullets for many years and they have become an integral part of the ammunition used for many big game hunts. Whether hunting elk or African game these Barnes Triple-Shock X-Bullets will deliver the kind of terminal performance youre looking for. Specifications for Barnes Bullets 30469 TSX 9.3mm .366 250 GR TSX Flat Base 50 Box: Manufacturer: Barnes Bullet Type: Hollow Point (HP) Flat Base Hollow Point (FBHP) Bullet Weight: 250 grain Projectile Caliber: .366 Caliber Sectional Density: 0.267 Bullet Quantity: 50 Bullet Country of Origin: USA Housing/Frame Material: Copper Fabric/Material: Copper Package Contents: Barnes Bullets 30469 TSX 9.3mm .366 250 GR TSX Flat Base 50 Box Barnes Bullets 30469 TSX 9.3mm .366 250 GR TSX Flat Base 50 Box