The 22 Long Rifle came third in a line of 0.22-claiber rimfire cartridges that began with the 22 Short ... 22 LR ammo; it can leave a greasy residue on your hands. When Winchester introduced ...

Winchester Ammunition has introduced a new M-22 Subsonic .22 LR round designed specifically to function in semi-automatic firearms, while remaining subsonic from both pistol and rifle length barrels.