"CCI Stinger .22 LR 32 Grain gave birth to the term ""Hyper-Velocity"" rimfire ammo over 40 years ago, and it still leads the pack for sizzling velocities from a .22 LR round. Stinger .22 ammo delivers dramatic impact energy from a copper-plated, 32-grain, hollow point bullet with a teardrop cavity that expands explosively against thin-skinned varmints. CCI obtains maximum velocity with an increased powder charge, packed into nickel-plated brass cases that resist corrosion and cycle smoothly in all types of actions. CCI Stinger Rimfire Ammo is manufactured with strict quality control to eliminate inconsistencies, resulting in reliable ignition, and consistent accuracy from one box to the next. Sizzling velocities Dramatic impact energy 32-grain, hollow point bullet Nickel-plated brass cases"