Caliber: 444 Marlin - Bullet Weight: 265 Grain - Bullet Type: Flex Tip Expanding - Muzzle Energy: 3180 ft lbs - Muzzle Velocity: 2325 fps - Casing Material: Brass - Rounds Per Box: 20 - LEVERevolution is the most exciting thing to ever happen to lever gun ammunition. Hornady the leader in ballistic technology brings you an innovation in ammunition performance featuring state of the industry patented FTX (Flex Tip eXpanding) and MonoFlex bullets that are SAFE in your tubular magazine. Its higher ballistic coefficient delivers dramatically flatter trajectories for fantastic downrange energy increases and amazing bullet expansion at all ranges. It truly is an evolution in lever gun ammunition!