Underwood Xtreme Defender Hunting & Self Defense Handgun Ammunition 10mm Auto 115gr Solid 1700 fps 20/ct
$31.99
The Underwood Xtreme Defender 10mm Auto 115gr Solid ammunition combines dual-purpose versatility for hunters and shooters who demand a cartridge that performs equally well on game and in self-defense roles. Loaded to 1700 fps with a solid copper projectile, this round delivers the terminal performance and velocity needed for both hunting applications and stopping threats, all in a reloadable brass package that keeps you in the field or at the range longer.
Built on nickel-plated brass cases with boxer primers, Underwood's 10mm loading is non-corrosive and reloadable—a shooter's choice when you want quality ammunition that respects your equipment and your budget. At 115 grains, this load generates 738 ft-lbs of muzzle energy and remains supersonic downrange, maintaining the velocity and impact characteristics that matter in both hunting and defensive scenarios. The lead-free, solid copper construction ensures you're compliant with non-toxic ammunition regulations in restricted areas while delivering consistent, reliable expansion and penetration.
Whether you're carrying a 10mm for backcountry protection, hunting medium game, or training at the range, the Xtreme Defender offers the ballistic stability and energy retention you expect from a quality defensive round. The cartridge is also rated safe for use in suppressed firearms, giving versatile shooters one less thing to worry about when choosing ammunition.
Key Features
- Lead-free solid copper projectile—no lead exposure, compliant with lead-free ammo regulations
- 1700 fps muzzle velocity with 738 ft-lbs of energy for reliable impact performance
- Nickel-plated brass cases with boxer primers for easy reloading and extended life
- Non-corrosive formulation—safe for all firearms and outdoor use
- Supersonic performance maintains velocity and terminal effect downrange
- Suppressor-safe—rated for use in sound-suppressed firearms
- Dual-purpose design for hunting and self-defense applications
Specifications
| Caliber | 10mm Auto |
| Bullet Weight | 115 grains |
| Bullet Material | Solid Copper (lead-free) |
| Bullet Diameter | 0.4 inches |
| Muzzle Velocity | 1700 fps |
| Muzzle Energy | 738 ft-lbs |
| Case Material | Nickel-Plated Brass |
| Primer Type | Boxer |
| Reloadable | Yes |
| Corrosive | No |
| Rounds Per Box | 20 |
| Manufacturer | Underwood Ammo |
| Sectional Density (SD) | 0.103 |
| Suppressor Safe | Yes |
Frequently Asked Questions
Is Underwood Xtreme Defender 10mm safe to use in a suppressor?
Yes. This ammunition is rated safe for use in sound-suppressed firearms, making it a solid choice if you run a suppressor on your 10mm.
Can I reload these brass cases?
Absolutely. The nickel-plated brass cases are boxer-primed and non-corrosive, which means they're fully reloadable and built to last through multiple loadings.
Is this ammunition lead-free?
Yes. The projectile is a solid copper construction with no lead content, making it compliant with lead-free ammunition requirements in sensitive hunting areas and ranges.
What's the intended use for this round—hunting or self-defense?
Underwood designed the Xtreme Defender for both. At 1700 fps with 738 ft-lbs of muzzle energy, it delivers the velocity and terminal performance suitable for hunting medium game and defensive applications.
