Underwood Ammo 942Underwood Ammo 942 Xtreme Hunter Platinum 10mmAuto 150gr Solid Monolithic 20 Per Box/10 CaseUnderwood Ammo$47.53
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Underwood Ammo
The Underwood Ammo 940 Xtreme Defense Platinum 10mm Auto round is built for shooters who demand serious stopping power in a self-defense load. Loaded to true 10mm velocity with a 115-grain solid monolithic copper bullet, this is ammunition engineered for maximum effectiveness when it matters most. The round launches at 1700 feet per second and delivers 738 foot-pounds of muzzle energy—ballistics that command respect in a defensive scenario. Because it's manufactured with lead-free construction, it's also a responsible choice for indoor ranges and training where lead exposure is a concern.
What sets the Xtreme Defense Platinum apart is its solid copper design. Unlike traditional jacketed hollow-points, the monolithic build eliminates jacket separation and ensures consistent expansion and penetration. The sectional density of 0.103 drives deep and reliable wound channels, critical for self-defense ammunition where performance under real conditions can't be compromised. This is a supersonic round—it travels faster than the speed of sound, maintaining velocity and energy downrange without relying on subsonic behavior.
Underwood loads this ammunition in nickel-plated brass cases that resist corrosion and feed reliably. It's boxer-primed and fully reloadable, so once you've fired it, the brass retains value for handloaders. The 20-round box format keeps your defensive stash fresh without excessive bulk, and the 10-box case option is ideal for shooters who want to stock up on a trusted load. This ammunition is also suppressor-safe, giving you flexibility if you're running a can on your 10mm platform.
If you carry a 10mm for self-defense or want ammunition you can trust at the range, the Xtreme Defense Platinum delivers the velocity, energy, and engineering required to perform. It's the kind of load serious 10mm shooters depend on.
| Caliber | 10mm Auto |
| Bullet Weight | 115 grains |
| Bullet Type | Solid Monolithic Copper |
| Muzzle Velocity | 1700 feet per second |
| Muzzle Energy | 738 foot-pounds |
| Sectional Density | 0.103 |
| Case Material | Nickel-Plated Brass |
| Primer Type | Boxer |
| Rounds Per Box | 20 |
| Bullet Diameter | 0.4" (10mm) |
| Lead-Free | Yes |
| Reloadable | Yes |
| Suppressor Safe | Yes |
| Ammunition Type | Supersonic |
| Manufacturer | Underwood Ammo |
Yes. This ammunition is suppressor-safe and can be used reliably with sound suppressors on 10mm platforms.
Absolutely. The nickel-plated brass cases are boxer-primed and fully reloadable, making them suitable for reloaders who want to stretch the value of their ammunition investment.
Yes. The 115-grain monolithic copper bullet contains no lead, making it appropriate for indoor ranges and environments where lead exposure is regulated or restricted.
This round launches at 1700 feet per second and delivers 738 foot-pounds of muzzle energy at the muzzle, providing serious stopping power in a 10mm self-defense configuration.
Underwood Ammo
The Underwood Ammo 940 Xtreme Defense Platinum 10mm Auto round is built for shooters who demand serious stopping power in a self-defense load. Loaded to true 10mm velocity with a 115-grain solid monolithic copper bullet, this is ammunition engineered for maximum effectiveness when it matters most. The round launches at 1700 feet per second and delivers 738 foot-pounds of muzzle energy—ballistics that command respect in a defensive scenario. Because it's manufactured with lead-free construction, it's also a responsible choice for indoor ranges and training where lead exposure is a concern.
What sets the Xtreme Defense Platinum apart is its solid copper design. Unlike traditional jacketed hollow-points, the monolithic build eliminates jacket separation and ensures consistent expansion and penetration. The sectional density of 0.103 drives deep and reliable wound channels, critical for self-defense ammunition where performance under real conditions can't be compromised. This is a supersonic round—it travels faster than the speed of sound, maintaining velocity and energy downrange without relying on subsonic behavior.
Underwood loads this ammunition in nickel-plated brass cases that resist corrosion and feed reliably. It's boxer-primed and fully reloadable, so once you've fired it, the brass retains value for handloaders. The 20-round box format keeps your defensive stash fresh without excessive bulk, and the 10-box case option is ideal for shooters who want to stock up on a trusted load. This ammunition is also suppressor-safe, giving you flexibility if you're running a can on your 10mm platform.
If you carry a 10mm for self-defense or want ammunition you can trust at the range, the Xtreme Defense Platinum delivers the velocity, energy, and engineering required to perform. It's the kind of load serious 10mm shooters depend on.
| Caliber | 10mm Auto |
| Bullet Weight | 115 grains |
| Bullet Type | Solid Monolithic Copper |
| Muzzle Velocity | 1700 feet per second |
| Muzzle Energy | 738 foot-pounds |
| Sectional Density | 0.103 |
| Case Material | Nickel-Plated Brass |
| Primer Type | Boxer |
| Rounds Per Box | 20 |
| Bullet Diameter | 0.4" (10mm) |
| Lead-Free | Yes |
| Reloadable | Yes |
| Suppressor Safe | Yes |
| Ammunition Type | Supersonic |
| Manufacturer | Underwood Ammo |
Yes. This ammunition is suppressor-safe and can be used reliably with sound suppressors on 10mm platforms.
Absolutely. The nickel-plated brass cases are boxer-primed and fully reloadable, making them suitable for reloaders who want to stretch the value of their ammunition investment.
Yes. The 115-grain monolithic copper bullet contains no lead, making it appropriate for indoor ranges and environments where lead exposure is regulated or restricted.
This round launches at 1700 feet per second and delivers 738 foot-pounds of muzzle energy at the muzzle, providing serious stopping power in a 10mm self-defense configuration.