Winchester Varmint X RIFLE .17 Hornet 20 grain Rapid Expansion Polymer Tip Centerfire Rifle Ammo 20 Rounds. The sleek polymer-tipped bullets are explosive upon impact. Varmint X combines the proven dependability Winchester is known for with today's latest technology providing hunters the ammunition of choice for pursuing everything from prairie dogs to coyotes. Specifications for Winchester Varmint X RIFLE .17 Hornet 20 grain Rapid Expansion Polymer Tip Centerfire Rifle Ammunition: Manufacturer: Winchester Caliber: .17 Hornet Number of Rounds: 20 Bullet Type: Rapid Expansion Polymer Tip (REPT) Bullet Weight: 20 grain Cartridge Case Material: Brass Muzzle Velocity: 3650 ft/s Muzzle Energy: 592 ft-lbs Application: Varmint Package Type: Box Primer Style: Centerfire Lead Free: No Gun Type: Rifle Features of Winchester VARMINT X RIFLE .17 Hornet 20 grain Rapid Expansion Polymer Tip Centerfire Rifle Ammunition: Polymer TipMaximizes long range performance and promotes rapid expansion Alloy JacketThin jacket with engineered sidewall profile for explosive fragmentation Lead CoreDesigned for rapid fragmentation Package Contents: Winchester VARMINT X RIFLE .17 Hornet 20 grain Rapid Expansion Polymer Tip Centerfire Rifle Ammunition What is Winchester Varmint X RIFLE .17 Hornet 20 grain Rapid Expansion Polymer Tip Centerfire Rifle Ammunition good for? The manufacturer says that it is suitable for varmint.Winchester X17P: Varmint X Rifle Ammo .17 Hornet Rapid Expansion Polymer Tip 20 grain 20 Rounds