Buffalo Bore Ammunition Outdoorsman 9mm Luger +P 147 Gr Hard Cast Flat. The hard cast bullet will not lead foul a functional barrel that is in a normal state of operation including polygonal barrels in any make of pistol including Glock pistols. This load is designed to penetrate deep (4 to 6 feet) in a straight line through flesh and bones and that flat nose does considerably more terminal damage as it crushes its way through tissues. It keeps the bullet nose forward and ensures very deep straight-line penetration. Specifications for Buffalo Bore Ammunition 24L/20 Outdoorsman 9mm Luger +P 147 Gr Hard Cast Flat N: Manufacturer: Buffalo Bore Ammunition Caliber: 9mm Luger Number of Rounds: 20 Bullet Type: Hard Cast Flat Nose (HCFN) Bullet Weight: 147 grain Cartridge Case Material: Brass Muzzle Velocity: 1100 ft/s Application: Hunting Primer Style: Centerfire