Underwood Ammo 10mm Auto 220gr Flat Nose Ammo

Underwood Ammo 10mm Auto 220gr Flat Nose Handgun Ammunition

Push your 10mm to its full potential with Underwood Ammo 220gr Flat Nose—a powerhouse load built for deep penetration, high impact, and serious reliability. This round features a 220-grain hard cast flat nose (HC-FN) projectile, designed for maximum straight-line penetration, making it ideal for woods carry, bear defense, and handgun hunting.

Engineered with flash-suppressed powder, Underwood ensures consistent performance even in low-light conditions, while the nickel-plated brass casing delivers smooth feeding and easy extraction. If you demand hard-hitting performance from your 10mm, this round delivers.

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Purpose-Built for the Outdoors

The hard cast flat nose bullet doesn’t expand—it punches through heavy bone, hide, or thick barriers without deformation. It’s the trusted choice for hunters, hikers, and backcountry adventurers who need absolute stopping power in a compact platform.

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Key Specifications:

• Caliber: 10mm Auto

• Bullet Weight: 220 grains

• Bullet Type: Hard Cast Flat Nose (non-expanding)

• Muzzle Velocity: ~1,200 fps

• Muzzle Energy: ~703 ft-lbs

• Casing: Nickel-plated brass (reloadable)

• Primer: Boxer

• Quantity: 20 rounds per box

• Use: Bear defense, backcountry carry, deep-penetration hunting

• Made in the USA

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Note: Hard cast bullets may not be recommended for use in barrels with polygonal rifling (e.g., factory Glock barrels). Always check manufacturer guidelines.