Buffalo Bore Ammunition Hunting & Sniping 458 SOCOM 400 Gr Semi Jacketed. For those who want to hunt big game destroy cars or houses or do close range sniping with an AR platform firearm the 458 SOCOM has no equal. Specifications for Buffalo Bore Ammunition 47D/20 Hunting & Sniping 458 SOCOM 400 Gr Semi Jacketed: Manufacturer: Buffalo Bore Ammunition Caliber: .458 SOCOM Number of Rounds: 20 Bullet Type: Semi Jacketed Flat Point (SJFP) Bullet Weight: 400 grain Cartridge Case Material: Brass Muzzle Velocity: 1550 ft/s Application: Large Game Primer Style: Centerfire What is Buffalo Bore Ammunition 47D/20 Hunting & Sniping 458 SOCOM 400 Gr Semi Jacketed good for? The manufacturer thinks that it is best for large game.