
Availability: In Stock
Underwood Ammo's 139 9mm+P 147gr jacketed hollow point round delivers serious stopping power for self-defense and carries the kind of real-world engineering that matters when it counts. Built with Nosler Assured Stopping Power (ASP) projectiles featuring deep jacket skives, these rounds expand reliably and consistently without sacrificing the accuracy and reliable feeding you need from your duty or carry gun. At 1125 fps and 413 ft-lbs of muzzle energy, this +P load strikes a balance between velocity and controllability—hot enough to perform, measured enough to stay on target.
The nickel-plated brass casing sets Underwood apart from standard offerings. Beyond the polished look, nickel plating resists corrosion far better than bare brass, won't tarnish in storage or when exposed to leather, moisture, or other metals, and feeds more reliably across different firearm actions. If you reload, these boxer-primed, reloadable cases reduce your long-term ammunition costs. New production, non-corrosive, and suppressor-safe, these rounds are built for real guns and real scenarios—field-tested by Underwood using popular firearms you actually own.
Flash-suppressed powder keeps your night vision intact if you ever need to use your firearm in low-light conditions, a detail that separates quality defensive ammo from the rest. Each box contains 20 rounds, and Underwood packages them in quantities of 10 boxes per case, so you can stock up or split a case with a shooting partner. Lead-core construction with a ballistic coefficient of 0.156 G1 keeps the projectile stable in flight, while a sectional density of 0.167 supports deep, reliable penetration.
| Caliber | 9mm Luger +P |
| Bullet Weight | 147 grains |
| Bullet Type | Jacketed Hollow Point (Nosler ASP) |
| Bullet Diameter | 0.355" |
| Muzzle Velocity | 1125 fps |
| Muzzle Energy | 413 ft-lbs |
| Case Material | Nickel-Plated Brass |
| Primer Type | Boxer |
| Ballistic Coefficient (G1) | 0.156 |
| Sectional Density | 0.167 |
| Rounds Per Box | 20 |
| Boxes Per Case | 10 |
| Reloadable | Yes |
| Suppressor Safe | Yes |
| Corrosive | No |
This is a +P rated round, which means it generates higher pressure than standard 9mm Luger ammunition. Use it only in handguns specifically rated for 9mm+P by the manufacturer. Standard 9mm firearms are not designed for +P pressures. Always verify your gun's markings or consult your owner's manual before shooting +P ammunition.
Yes. These rounds are specifically designed for self-defense applications, with Nosler ASP projectiles engineered for reliable expansion and controlled penetration. The 147-grain weight at 1125 fps provides good energy delivery while remaining controllable for accuracy.
Yes, this ammunition is suppressor-safe.
Yes. The nickel-plated brass casings are boxer-primed and reloadable, making them suitable for handloaders looking to reduce per-round costs over time.

SKU: 152746811 • Width: 2.3in • Height: 1.3in • Depth: 2.6in • Weight: 0.655oz





Availability: In Stock
Underwood Ammo's 139 9mm+P 147gr jacketed hollow point round delivers serious stopping power for self-defense and carries the kind of real-world engineering that matters when it counts. Built with Nosler Assured Stopping Power (ASP) projectiles featuring deep jacket skives, these rounds expand reliably and consistently without sacrificing the accuracy and reliable feeding you need from your duty or carry gun. At 1125 fps and 413 ft-lbs of muzzle energy, this +P load strikes a balance between velocity and controllability—hot enough to perform, measured enough to stay on target.
The nickel-plated brass casing sets Underwood apart from standard offerings. Beyond the polished look, nickel plating resists corrosion far better than bare brass, won't tarnish in storage or when exposed to leather, moisture, or other metals, and feeds more reliably across different firearm actions. If you reload, these boxer-primed, reloadable cases reduce your long-term ammunition costs. New production, non-corrosive, and suppressor-safe, these rounds are built for real guns and real scenarios—field-tested by Underwood using popular firearms you actually own.
Flash-suppressed powder keeps your night vision intact if you ever need to use your firearm in low-light conditions, a detail that separates quality defensive ammo from the rest. Each box contains 20 rounds, and Underwood packages them in quantities of 10 boxes per case, so you can stock up or split a case with a shooting partner. Lead-core construction with a ballistic coefficient of 0.156 G1 keeps the projectile stable in flight, while a sectional density of 0.167 supports deep, reliable penetration.
| Caliber | 9mm Luger +P |
| Bullet Weight | 147 grains |
| Bullet Type | Jacketed Hollow Point (Nosler ASP) |
| Bullet Diameter | 0.355" |
| Muzzle Velocity | 1125 fps |
| Muzzle Energy | 413 ft-lbs |
| Case Material | Nickel-Plated Brass |
| Primer Type | Boxer |
| Ballistic Coefficient (G1) | 0.156 |
| Sectional Density | 0.167 |
| Rounds Per Box | 20 |
| Boxes Per Case | 10 |
| Reloadable | Yes |
| Suppressor Safe | Yes |
| Corrosive | No |
This is a +P rated round, which means it generates higher pressure than standard 9mm Luger ammunition. Use it only in handguns specifically rated for 9mm+P by the manufacturer. Standard 9mm firearms are not designed for +P pressures. Always verify your gun's markings or consult your owner's manual before shooting +P ammunition.
Yes. These rounds are specifically designed for self-defense applications, with Nosler ASP projectiles engineered for reliable expansion and controlled penetration. The 147-grain weight at 1125 fps provides good energy delivery while remaining controllable for accuracy.
Yes, this ammunition is suppressor-safe.
Yes. The nickel-plated brass casings are boxer-primed and reloadable, making them suitable for handloaders looking to reduce per-round costs over time.
SKU: 152746811 • Width: 2.3in • Height: 1.3in • Depth: 2.6in • Weight: 0.655oz
