Underwood Ammo Centerfire Pistol Features The Underwood Ammo 10mm load uses a full metal jacket flat nose bullet engineered for non expanding deeply penetrative performance against dense muscular game. Unlike a round nose design the flat nose profile pierces through dense bodies of mass while maintaining its forward position which is optimal for maximum straight line penetration. At 180 grains and 1300 feet per second this load generates 676 ft lbs of muzzle energy giving it the power needed for dangerous game encounters in the backcountry. Underwood tests every load using popular real world firearms so the ballistic performance translates to what shooters actually carry. Every Underwood Ammo round uses flash suppressed powder which helps preserve the shooter s vision if the firearm must be used in low light conditions. The nickel plated brass casing resists corrosion and improves feeding reliability across a range of 10mm pistols. This round is rated supersonic delivering the velocity and penetration that woods defense situations demand against hogs and bears. Packaged 50 rounds to a box the Underwood Ammo 10mm FMJFN gives serious outdoorsmen a dependable load for carrying in bear and hog country. Underwood Ammo Centerfire Pistol Specifications Manufacturer: Underwood Ammo Caliber: 10mm Bullet Weight: 180 gr Bullet Type: Full Metal Jacket Flat Nose Rounds Per Box: 50 Muzzle Velocity: 1300 fps Muzzle Energy: 676 ft lbs Case Material: Nickel-Plated Brass Application: Medium Game Rating: Supersonic Available At: GrabAGun