Supernova Red Tracer Non Corrosive 22 LR 40 Grain Lead Round Nose Brass Cased Rimfire Ammo 50 Rounds. 22LR Rimfire Cartridges are designed for use in rifles and will function in most auto-loading firearms. Our tracer ammunition produces a bright colored beam of light over 100 yards (shooters have reported our tracers tracing 300+ yards). Specifications for Supernova Red Tracer Non Corrosive 22 LR 40 Grain Lead Round Nose Brass Cased Rimfire Ammunition: Manufacturer: Supernova Caliber: .22 Long Rifle Number of Rounds: 50 Bullet Type: Lead Round Nose (LRN) Bullet Weight: 40 grain Muzzle Velocity: 1070 ft/s Included Accessories: None Primer Style: Rimfire Case Material: Brass Package Contents Supernova Red Tracer Non Corrosive 22 LR 40 Grain Lead Round Nose Brass Cased Rimfire Ammunition Supernova PMSN22LRR: Red Tracer Non Corrosive 22 LR 40 Grain Lead Round Nose Brass Cased Rimfire Ammo 50 Rounds