Supernova Green Tracer Non Corrosive 22 LR 40 gr Lead Round Nose LRN 50 Per Box/ 10 Cs. It also makes great practice ammo as it allows you to track the exact path of the bullet helping you to understand its dynamics. Specifications for Supernova Tracer Green Non Corrosive 22 LR 40 Grain Lead Round Nose Rimfire Ammunition: Manufacturer: Supernova Caliber: .22 Long Rifle Number of Rounds: 50 Bullet Type: Lead Round Nose (LRN) Bullet Weight: 40 grain Cartridge Case Material: Brass Muzzle Velocity: 1070 ft/s Application: Target Included Accessories: None Primer Style: Rimfire Case Material: Brass Package Contents: Supernova Tracer Green Non Corrosive 22 LR 40 Grain Lead Round Nose Rimfire Ammunition What is Supernova Tracer Green Non Corrosive 22 LR 40 Grain Lead Round Nose Rimfire Ammunition good for? The manufacturer suggests that it is good for target.Piney Mountain Ammunition PMSN22LRG: PMSN22LRG Green Tracer Non Corrosive 22 LR 40 gr Lead Round Nose LRN 50 Per Box/ 10 Cs