Buffalo Bore Ammunition Buffalo-Barnes Lead-Free 45-70 Gov 350 Gr Barnes TSX. Buffalo Bore produces strictly big bore ammo with massive firepower and dramatic results. Popular calibers include: 45-70 Magnum Lever gunheavy .444 Marlin Heavy 38-55 WinchesterHeavy 348 Winchester50 Alaskan Heavy 35 Remington Sniper 223 Remington Sniper 308 Winchester Heavy 450 Marlin Heavy 30/30. Specifications for Buffalo Bore Ammunition 8G Buffalo-Barnes Lead-Free 45-70 Gov 350 Gr Barnes TSX: Manufacturer: Buffalo Bore Ammunition Caliber: .45-70 Government Number of Rounds: 20 Bullet Type: Flat Nose (FN) Bullet Weight: 350 grain Cartridge Case Material: Brass Muzzle Velocity: 2150 ft/s Application: Large Game Primer Style: Centerfire What is Buffalo Bore Ammunition 8G Buffalo-Barnes Lead-Free 45-70 Gov 350 Gr Barnes TSX good for? The manufacturer suggests that it is best for large game.