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Underwood Ammo

Underwood Ammo .454 Casull 250gr. Xtreme Penetrator® Solid Monolithic Self Defense free shipping over $250

Product Code : 816874021016

$3.20 per round

Mfg Item #: 340


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Underwood Ammo™ combines our trademark power and precision with Lehigh Defense masterfully designed Xtreme Penetrator bullets - the result is one jaw dropping round. This round is solid copper and features a unique nose that maximizes penetration and facilitates consistent and reliable magazine feeding. This round offers: Solid Copper (Lead Free) precision CNC machined design. Good for the environment, bad, really bad for the target Unique nose that increases the hydraulic velocity creating high pressure spikes resulting in a larger permanent wound column and over twice the penetration than most expanding bullets. Blunt nose for initial energy transfer and straight, deep penetration while allowing for reliable magazine feeding. Solid copper construction and cutting edges to punch through entry barriers without deformation or deflection.

As with all of Underwood Ammo™ rounds, we utilize flash suppressed powder so that your vision will not be compromised if it becomes necessary to use your firearm in low light.

  • This ammo is for cartridge size .454 Casull.
  • The bullet is made from Copper.
  • The diameter (caliber) of this bullet is 0.452.
  • This bullet weighs 250 grains.
  • This bullet leaves the barrel at 1650 feet per second.
  • The ammo case is made from Brass.
  • This ammo is a proven round for hunting.
  • The bullet in this product does NOT contain lead.
  • This round is designed to be supersonic and travels faster than the speed of sound.
  • The muzzle energy of this ammo is 1512 ft lbs.
  • This product has been designed to be an effective choice for the ultimate in self-defense applications.
  • The bullet in this product has a Sectional Density, (SD) of 0.174809527538794. SD is the ratio of an object's mass to its cross sectional area with respect to a given axis. It conveys how well an object's mass is distributed (by its shape) to overcome resistance along that axis.
  • This ammo IS SAFE to use in a suppressor.
  • The bullet in this ammo has a ballistic coefficient (G1) of - Generally, the higher the coefficient, the more stable the projectile will be in flight.

    • SKU : 340
    • Cartridge : .454 Casull
    • Bullet Brand : Lehigh Defense™
    • Bullet Weight (gr) : 250
    • Bullet Construction : Solid Monolithic
    • Bullet Model : Xtreme Penetrator®
    • Bullet Material : Copper
    • Case Type : Brass
    • Supressor Safe : Yes


    • Muzzle Energy (ft. lbs) : 1,512
    • Muzzle Velocity (fps) : 1,650
    • Sectional Density : 0.180

Determined at checkout.