Supernova Red 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 Red 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 Red Non Corrosive 22 LR 40 Grain Lead Round Nose Rimfire Ammunition What is Supernova Tracer Red Non Corrosive 22 LR 40 Grain Lead Round Nose Rimfire Ammunition good for? The manufacturer says that it is best for target.Piney Mountain Ammunition PMSN22LRR: PMSN22LRR Red Tracer Non Corrosive 22 LR 40 gr Lead Round Nose LRN 50 Per Box/ 10 Cs