Nosler AccuBond Bullets 270 Caliber (277 Diameter) 140 Grain Bonded Spitzer Boat Tail (50pk)AccuBond represents the most advanced bonded core bullet technology to date. Through a proprietary bonding process that eliminates voids in the bullet core, AccuBond marries Nosler's traditional copper alloy jacket with its special lead alloy core. The result is a bullet that flies true, penetrates deep, won't cause extensive barrel fouling, and will retain 60 70% of its weight. The polymer tip helps protect against deformation while initiating