Winchester Ballistic Silvertip ammunition is engineered for extreme high-velocity performance and explosive terminal energy. These 243 Win cartridges feature a 55 gr Fragmenting Polymer Tip projectile, achieving an impressive muzzle velocity of 3910 fps. The design incorporates a sharp polymer tip and a boat tail to minimize drag, ensuring a flat trajectory and superior accuracy for long-range shots. Each box contains 20 rounds with high-quality brass casings. Delivering a muzzle energy of 1867 ft lbs, this load is specifically designed for hunters who require extreme precision and rapid fragmentation upon impact. Safety Note Always verify your firearm is specifically chambered for 243 Win. Ultra-high-velocity rifle cartridges carry lethal energy over long distances; always follow all safe firearm handling practices and local hunting laws.