Underwood Ammo194201720
Underwood Ammo Xtreme Hunter Handgun Ammunition 10mm Auto 150gr Solid Monolithic 1425 fps 20/ct$46.63
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Availability: In Stock
Underwood Ammo Xtreme Defender .45 Auto (+P) ammunition delivers serious stopping power for shooters who demand reliable self-defense performance. Built around a 135-grain monolithic copper bullet pushed to 1335 fps, this load combines velocity with modern defensive design—no lead, no compromise. The nickel-plated brass cases are reloadable and non-corrosive, so you can stretch the value of each box while keeping your equipment clean.
The Xtreme Defender is engineered for the .45 ACP +P platform, hitting 537 ft-lbs of muzzle energy. That extra pressure means more consistent expansion and deeper penetration when it counts. Monolithic solid construction eliminates fragmentation concerns and delivers the kind of predictable, controlled performance that matters in a carry round. And if you run a suppressor, this ammunition is rated safe for use with one—no special precautions needed.
Twenty rounds per box means you get a workable quantity for qualification, practice, or duty carry rotation. Whether you're a .45 purist building a reliable self-defense load or testing ammunition across your platform, Underwood's commitment to quality brass and repeatable ballistics makes this a solid choice. New production, properly primed, loaded to respect the +P rating—this is handgun ammunition built for confidence.
| Caliber | .45 Auto (+P) |
| Bullet Weight | 135 grains |
| Bullet Diameter | 0.452 inches |
| Bullet Material | Monolithic copper (lead-free) |
| Muzzle Velocity | 1335 feet per second |
| Muzzle Energy | 537 foot-pounds |
| Sectional Density | 0.084 |
| Case Type | Nickel-plated brass, reloadable |
| Primer Type | Boxer |
| Corrosive | No |
| Suppressor Safe | Yes |
| Rounds Per Box | 20 |
| Manufacturer | Underwood Ammo |
Yes. Underwood rates this load as safe for suppressor use, so you can run it through your can without worry.
Yes. These are boxer-primed, non-corrosive nickel-plated brass cases that can be reloaded using standard equipment.
The +P rating means this ammunition runs at higher pressure, delivering increased velocity and energy. The 135-grain monolithic copper bullet is designed for self-defense use with controlled expansion and no lead.
Each box contains 20 loaded rounds of ammunition.
SKU: 194201752 • Width: 2.5in • Height: 1.5in • Depth: 3.2in • Weight: 0.75oz
Availability: In Stock
Underwood Ammo Xtreme Defender .45 Auto (+P) ammunition delivers serious stopping power for shooters who demand reliable self-defense performance. Built around a 135-grain monolithic copper bullet pushed to 1335 fps, this load combines velocity with modern defensive design—no lead, no compromise. The nickel-plated brass cases are reloadable and non-corrosive, so you can stretch the value of each box while keeping your equipment clean.
The Xtreme Defender is engineered for the .45 ACP +P platform, hitting 537 ft-lbs of muzzle energy. That extra pressure means more consistent expansion and deeper penetration when it counts. Monolithic solid construction eliminates fragmentation concerns and delivers the kind of predictable, controlled performance that matters in a carry round. And if you run a suppressor, this ammunition is rated safe for use with one—no special precautions needed.
Twenty rounds per box means you get a workable quantity for qualification, practice, or duty carry rotation. Whether you're a .45 purist building a reliable self-defense load or testing ammunition across your platform, Underwood's commitment to quality brass and repeatable ballistics makes this a solid choice. New production, properly primed, loaded to respect the +P rating—this is handgun ammunition built for confidence.
| Caliber | .45 Auto (+P) |
| Bullet Weight | 135 grains |
| Bullet Diameter | 0.452 inches |
| Bullet Material | Monolithic copper (lead-free) |
| Muzzle Velocity | 1335 feet per second |
| Muzzle Energy | 537 foot-pounds |
| Sectional Density | 0.084 |
| Case Type | Nickel-plated brass, reloadable |
| Primer Type | Boxer |
| Corrosive | No |
| Suppressor Safe | Yes |
| Rounds Per Box | 20 |
| Manufacturer | Underwood Ammo |
Yes. Underwood rates this load as safe for suppressor use, so you can run it through your can without worry.
Yes. These are boxer-primed, non-corrosive nickel-plated brass cases that can be reloaded using standard equipment.
The +P rating means this ammunition runs at higher pressure, delivering increased velocity and energy. The 135-grain monolithic copper bullet is designed for self-defense use with controlled expansion and no lead.
Each box contains 20 loaded rounds of ammunition.
SKU: 194201752 • Width: 2.5in • Height: 1.5in • Depth: 3.2in • Weight: 0.75oz