.21 Sharp. In essence, it shoots a .210-caliber bullet launched from a .22 LR case. Initial offerings from include a 34-grain Jacketed Hollow Point, a 37-grain copper-plated lead bullet, a 42-grain Full Metal Jacket and, very interestingly, a 25-grain all-copper bullet Winchester calls the Copper Matrix. Initial velocity results of 1,300 (42-grain) to 1,750 fps (25-grain) indicate the 21 Sharp is slightly faster than standard-velocity .22 LR loads with more energy. Initial accuracy results are very impressive, as is the round’s terminal bullet performance—the Sharp’s forte.