Buffalo Bore Ammunition Heavy 444 Marlin 300 Gr Semi Jacketed Flat Point. 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 9B/20 Heavy 444 Marlin 300 Gr Semi Jacketed Flat Point: Manufacturer: Buffalo Bore Ammunition Caliber: .444 Marlin Number of Rounds: 20 Bullet Type: Semi Jacketed Flat Point (SJFP) Bullet Weight: 300 grain Cartridge Case Material: Brass Muzzle Velocity: 2150 ft/s Application: Hunting Primer Style: Centerfire What is Buffalo Bore Ammunition 9B/20 Heavy 444 Marlin 300 Gr Semi Jacketed Flat Point good for? The manufacturer suggests that it is good for hunting.