Barnes 7mm .284" 140Gr TSX BTHP Bullet. The bullet that delivers a TRIPLE IMPACT − One when it first strikes game, another as the bullet begins opening, and a third devastating impact when the specially engineered cavity fully expands to deliver extra shock and maximum transferred energy. All-copper Triple-Shock™ X Bullets™ are top-rated by PHs, guides and experienced hunters. Multiple rings cut into the bullet’s shank reduce pressures, minimize fouling and significantly improve accuracy. Very user friendly.