Ammo Specifications Caliber: 22 WMR Bullet Type: TMJ Bullet Weight: 40 GR Quantity: 50 rounds per box For the backyard plinker or the competition shooter, CCI has what you need. For accurate, extremely consistent ammunition the only option is CCI s Competition, Target and Plinking line. CCI offers a variety of affordable loads and calibers ideal for each discipline and fit perfectly for popular rifle, pistol and semi-automatic shooters. And they re loaded to ideal velocities for the best performance. This is definitely worth a closer look.