Caliber: 220 Swift - Weight: 55 Grains - Bullet Type: V-Max - Muzzle Energy: 1654 ft lbs - Muzzle Velocity: 3680 fps - Casing Material: Brass - Rounds Per Box: 20 - Hornadys V-MAX bullets consistently achieve rapid fragmentation at all practical varmint shooting velocities. Every Varmint Express cartridge is hand inspected before leaving our factory ensuring there are no cosmetic flaws and imperfections.