Cutting Edge Bullets Single Feed MTAC .284 /7mm Caliber 157 Grain Solid Copper Match Rifle Bullets 50 Rounds MTAC 284 157 MAX. 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 Single Feed MTAC .284 /7mm Caliber 157 Grain Solid Copper Match Rifle Bullets: Manufacturer: Cutting Edge Bullets Gun Type: Rifle Bullet Type: Copper Expansion Projectile Caliber: .284 Winchester Cartridge Type: Rifle Bullet Weight: 157 grain Projectile Caliber: .284 Caliber Diameter: 7 mm G1 Ballistic Coefficient: 0.465 Core Material: Lead Jacket Material: Copper/Lead Free Bullet Quantity: 50 Bullet Package Contents: Cutting Edge Bullets Single Feed MTAC .284 /7mm Caliber 157 Grain Solid Copper Match Rifle Bullets Cutting Edge Bullets MTAC 284 157 MAX: Single Feed MTAC .284 /7mm Caliber 157 Grain Solid Copper Match Rifle Bullets 50 Rounds