LEVERevolution represents a breakthrough in ammo design for lever action rifles and revolvers. The key to its innovation and performance is the patented elastomer Flex Tip technology of the FTX and MonoFlex bullets. Safe to use in tubular magazines, these bullets feature higher ballistic coefficients and deliver dramatically flatter trajectory for increased down range performance. Product Specifications Caliber: 10mm Bullet Weight: 150 Grain Bullet Type: FTX Muzzle Velocity: 1220 fps Muzzle Energy: 496 ft-lbs Quantity: 20 Rounds per Box