Underwood Ammo Xtreme Penetrator (Platinum Edition) Handgun Ammunition 10mm Auto 140gr Solid 700 fps 20/ctUnderwood Ammo$40.21
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Underwood Ammo
The Underwood Xtreme Penetrator .380 ACP handgun ammunition is built for shooters who demand serious performance from a compact carry round. Loaded with a 90-grain solid copper bullet at 1100 feet per second, this is deep-penetrating, lead-free ammunition designed to deliver reliable expansion and energy transfer where it counts. Twenty rounds per box come in nickel-plated brass cases—new production, boxer-primed, and reloadable, so you can reload and shoot again without breaking the bank.
The .380 ACP has long been the caliber of choice for those seeking a thin, lightweight pistol for concealed carry or backup defense. Underwood's Xtreme Penetrator line takes that platform seriously. With a muzzle energy of 242 foot-pounds and a ballistic coefficient of 0.12, this round is designed to cut through barriers and deliver consistent, controlled penetration on target. The solid copper construction means no lead in the projectile, making handling and cleanup cleaner, and it's rated safe for use in suppressed firearms if your setup calls for it.
This is ammunition built by shooters, for shooters who understand that in a compact defensive platform, bullet design matters as much as velocity. Whether you're a .380 ACP devotee running a Bersa, Ruger LCP, or Sig Sauer P238, the Xtreme Penetrator delivers the terminal performance and reloadable brass value that serious handloaders and self-defense practitioners expect from Underwood.
| Caliber | .380 ACP |
| Bullet Weight | 90 grains |
| Bullet Material | Copper (lead-free) |
| Bullet Diameter | 0.355" |
| Muzzle Velocity | 1100 feet per second |
| Muzzle Energy | 242 ft-lbs |
| Ballistic Coefficient (G1) | 0.12 |
| Sectional Density | 0.102 |
| Case Type | Nickel-plated brass |
| Primer | Boxer, non-corrosive |
| Reloadable | Yes |
| Suppressor Safe | Yes |
| Rounds per Box | 20 |
| Manufacturer | Underwood Ammo |
Yes. This round is specifically rated safe for use with suppressed firearms, so if you're running a .380 with a threaded barrel and suppressor, you can use this ammunition without concern.
Yes. Underwood loads this ammunition in new production, boxer-primed, nickel-plated brass cases that are fully reloadable. After firing, you can resize, reprime, and reload them according to safe handloading practices.
The solid copper bullet design, combined with the 0.102 sectional density and 0.12 ballistic coefficient, is engineered specifically for deeper, more reliable penetration and barrier performance. It's a purpose-built round for serious self-defense use, not just plinking.
Yes. The bullet is made entirely of copper with no lead content, making it safer to handle and cleaner to shoot at indoor ranges and other facilities that restrict lead ammunition.
Underwood Ammo
The Underwood Xtreme Penetrator .380 ACP handgun ammunition is built for shooters who demand serious performance from a compact carry round. Loaded with a 90-grain solid copper bullet at 1100 feet per second, this is deep-penetrating, lead-free ammunition designed to deliver reliable expansion and energy transfer where it counts. Twenty rounds per box come in nickel-plated brass cases—new production, boxer-primed, and reloadable, so you can reload and shoot again without breaking the bank.
The .380 ACP has long been the caliber of choice for those seeking a thin, lightweight pistol for concealed carry or backup defense. Underwood's Xtreme Penetrator line takes that platform seriously. With a muzzle energy of 242 foot-pounds and a ballistic coefficient of 0.12, this round is designed to cut through barriers and deliver consistent, controlled penetration on target. The solid copper construction means no lead in the projectile, making handling and cleanup cleaner, and it's rated safe for use in suppressed firearms if your setup calls for it.
This is ammunition built by shooters, for shooters who understand that in a compact defensive platform, bullet design matters as much as velocity. Whether you're a .380 ACP devotee running a Bersa, Ruger LCP, or Sig Sauer P238, the Xtreme Penetrator delivers the terminal performance and reloadable brass value that serious handloaders and self-defense practitioners expect from Underwood.
| Caliber | .380 ACP |
| Bullet Weight | 90 grains |
| Bullet Material | Copper (lead-free) |
| Bullet Diameter | 0.355" |
| Muzzle Velocity | 1100 feet per second |
| Muzzle Energy | 242 ft-lbs |
| Ballistic Coefficient (G1) | 0.12 |
| Sectional Density | 0.102 |
| Case Type | Nickel-plated brass |
| Primer | Boxer, non-corrosive |
| Reloadable | Yes |
| Suppressor Safe | Yes |
| Rounds per Box | 20 |
| Manufacturer | Underwood Ammo |
Yes. This round is specifically rated safe for use with suppressed firearms, so if you're running a .380 with a threaded barrel and suppressor, you can use this ammunition without concern.
Yes. Underwood loads this ammunition in new production, boxer-primed, nickel-plated brass cases that are fully reloadable. After firing, you can resize, reprime, and reload them according to safe handloading practices.
The solid copper bullet design, combined with the 0.102 sectional density and 0.12 ballistic coefficient, is engineered specifically for deeper, more reliable penetration and barrier performance. It's a purpose-built round for serious self-defense use, not just plinking.
Yes. The bullet is made entirely of copper with no lead content, making it safer to handle and cleaner to shoot at indoor ranges and other facilities that restrict lead ammunition.