Varmint X Features The Winchester Varmint X Rifle Ammunition is highly recommended for determined varmint hunters as this ammunition works best for long-range shooting. Unlike other ammunition Winchester Varmint X Rifle Ammunition creates a fatal blow to the target. This ammo is created with a polymer coating at the tip to enhance shooting accuracy. This promotes the tip to point precisely on target providing a clearer shot overall. The bullet automatically disintegrates as it reaches the target s body surface giving varmints and related predators a fatal blasting effect. Varmint X Specifications Caliber: 223 Rem Model: Varmint X Bullet Weight: 40 gr Rounds Per Box: 20 Casing Material: Brass Application: Predator Varmint Bullet Type: Polymer Tip Rapid Expansion Muzzle Energy: 1151 ft lbs Muzzle Velocity: 3600 fps