This is 9mm +P+ ammunition. It is not intended for firearms that aren’t designed to handle 38,501 psi or higher chamber pressure.
Underwood explicitly advises against firing this ammo through a SIG Sauer P365 aftermarket barrel.
Squeeze as much stopping power into your 9mm handgun or PCC as you’re able. Order a box of Underwood’s fierce over-OVER-pressure ammunition! This round’s 115 grain bullet races out of a 4” barrel at a velocity of 1,300 fps – enough to grant it over 400 ft lbs of striking energy at close range, which is substantially more than the minimum recommended for defense. You’ll feel extra recoil, but the threat will feel far worse.
No jacketed hollow point here. That bullet is the Xtreme Penetrator, which lacks a nose cavity and therefore (A) passes through barriers efficiently, and (B) cannot jam up with debris that impairs its terminal performance. The solid copper (i.e. lead-free) bullet’s fluted tip channels soft tissue, pressurizes it, and then jets it outward in four lateral directions. The result is a positively crippling wound channel.
These rounds’ nickel-plated brass cases make them smoother-cycling, corrosion-resistant, and more easily visible in the chamber. Their low-flash powder is also a boon in the darkness, as its dull flash helps the eyes remain adjusted to their surroundings.
20 Round Box
Features and Specifications:
Manufacturer Number: 823
Caliber: 9mm Luger +P+
Bullet Weight: 115 Grains
Bullet Type: Lehigh Defense Xtreme Penetrator
Muzzle Velocity: 1300 fps
Muzzle Energy: 432 ft/lbs
Reloadable Nickel-Plated Brass Case
20 Rounds
Underwood explicitly advises against firing this ammo through a SIG Sauer P365 aftermarket barrel.
Squeeze as much stopping power into your 9mm handgun or PCC as you’re able. Order a box of Underwood’s fierce over-OVER-pressure ammunition! This round’s 115 grain bullet races out of a 4” barrel at a velocity of 1,300 fps – enough to grant it over 400 ft lbs of striking energy at close range, which is substantially more than the minimum recommended for defense. You’ll feel extra recoil, but the threat will feel far worse.
No jacketed hollow point here. That bullet is the Xtreme Penetrator, which lacks a nose cavity and therefore (A) passes through barriers efficiently, and (B) cannot jam up with debris that impairs its terminal performance. The solid copper (i.e. lead-free) bullet’s fluted tip channels soft tissue, pressurizes it, and then jets it outward in four lateral directions. The result is a positively crippling wound channel.
These rounds’ nickel-plated brass cases make them smoother-cycling, corrosion-resistant, and more easily visible in the chamber. Their low-flash powder is also a boon in the darkness, as its dull flash helps the eyes remain adjusted to their surroundings.
20 Round Box
Features and Specifications:
Manufacturer Number: 823
Caliber: 9mm Luger +P+
Bullet Weight: 115 Grains
Bullet Type: Lehigh Defense Xtreme Penetrator
Muzzle Velocity: 1300 fps
Muzzle Energy: 432 ft/lbs
Reloadable Nickel-Plated Brass Case
20 Rounds
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