Cutting Edge Bullets Match Tactical .224 Caliber 55 Grain Solid Copper Match Rifle Bullets 50 Rounds MTAC 224 55. Their MTAC line is machined out of lead free solid copper bar stock on a CNC swiss lathe. These are a high BC solid bullet designed exclusively for target use at all ranges. A unique feature of this bullet is their patented SealTite band which is a band slightly larger than caliber diameter around the bullet which was designed to eliminate fliers by preventing gas blow-by. The SealTite band also decreases copper fouling which is typically associated with mono metal bullets. Specifications for Cutting Edge Bullets Match Tactical .224 Caliber 55 Grain Solid Copper Match Rifle Bullets: Manufacturer: Cutting Edge Bullets Gun Type: Rifle Bullet Type: Copper Expansion Projectile Caliber: .224 Valkyrie Cartridge Type: Rifle Bullet Weight: 55 grain Projectile Caliber: .224 Caliber Diameter: 5.6 mm G1 Ballistic Coefficient: 0.25 Core Material: Lead Jacket Material: Copper/Lead Free Bullet Quantity: 50 Bullet Fabric/Material: Copper Package Contents: Cutting Edge Bullets Match Tactical .224 Caliber 55 Grain Solid Copper Match Rifle Bullets Cutting Edge Bullets MTAC 224 55: Match Tactical .224 Caliber 55 Grain Solid Copper Match Rifle Bullets 50 Rounds