Underwood Ammo loads a Hornady eXtreme Terminal Performance bullet in this .45 Colt 250gr XTP jacketed hollow point (Underwood part no. 433), sold in a 20-round box. Underwood says the XTP is designed for deep terminal penetration, great accuracy and controlled expansion. The load leaves the muzzle at 960 fps with 512 ft-lbs of energy, a subsonic rating that suits suppressed use, and Underwood lists it for medium and large game and personal defense. Nickel-plated brass cases and flash-suppressed powder complete the package.

Key Specifications

• The cartridge designation is .45 Colt (Long Colt), the designation Underwood uses for this load.
• Bullet weight is 250 grains, the weight Underwood loads in this Hornady XTP cartridge.
• The bullet is a Hornady XTP jacketed hollow point, a Hornady eXtreme Terminal Performance bullet designed for deep penetration and controlled expansion.
• Underwood rates muzzle velocity at 960 fps, a subsonic figure that tells you what to expect at the muzzle.
• Muzzle energy is listed at 512 ft-lbs, the figure to compare against other loads in this cartridge.
• Each box contains 20 loaded rounds, which is the quantity you receive with this listing.
• Sectional density is 0.175, the ratio of the bullet’s mass to its cross-sectional area.
• The case is nickel-plated brass, which Underwood says improves feeding and corrosion resistance and eases cleanup during reloading.
• The G1 ballistic coefficient is 0.146, a number Underwood publishes alongside the load.
• Underwood states the load is safe to use in a suppressor, a point that matters to suppressor owners.

Frequently Asked Questions

Is this the standard-pressure .45 Colt load? Yes. This listing is the .45 Colt (Long Colt) load without a +P marking, loaded with a 250-grain XTP jacketed hollow point at 960 fps.

What are the benefits of the nickel-plated case? Underwood says nickel plating improves feeding in all actions, adds corrosion resistance over plain brass, improves cosmetics and makes cleanup during reloading easier.

Can it be used with a suppressor? Underwood states that this ammunition is safe to use in a suppressor.

Buy the Underwood .45 Colt 250gr XTP Jacketed Hollow Point, 20-Round Box

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