Underwood Ammo194201732
Underwood Ammo 678Underwood Ammo 678 Xtreme Defense Platinum 380ACP 68gr Solid Monolithic 20 Per Box/10 Case$29.98
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Availability: In Stock
The Underwood Ammo 679 Xtreme Defense Platinum .380 ACP +P is a purpose-built self-defense round engineered for shooters who demand reliable expansion and barrier-blind performance in a compact pistol caliber. This 68-grain solid monolithic copper projectile delivers 1400 feet per second and 296 foot-pounds of muzzle energy from a typical .380 pocket gun—ballistics that translate to real stopping potential without the liability concerns of traditional hollow-point designs. The lead-free construction makes it clean to handle and shoot, while nickel-plated brass cases withstand the higher pressure of the +P loading and remain reloadable for cost-conscious shooters.
Built for modern self-defense, this round is equally at home in subcompact pistols favored by concealed-carry holders and in full-size .380 platforms. The solid monolithic bullet design eliminates traditional hollow-point feed reliability issues that sometimes plague compact automatics, while still providing the expansion characteristics needed for effective wound trauma. The ammunition is suppressor-safe, expanding your options if you're running a can on a .380 host gun. Each box contains 20 rounds, with convenient 10-box cases available for stocking your defensive supply.
Underwood's Xtreme Defense Platinum represents a step up in .380 ACP performance—the kind of ammunition that doesn't make excuses for the cartridge's inherent limitations, but maximizes what it can deliver. If you carry a .380 and you're serious about the job it's supposed to do, this is ammunition worth running in dry fire, at the range, and in your chamber.
| Caliber | .380 ACP +P |
| Bullet Weight | 68 grains |
| Bullet Type | Solid Monolithic Copper |
| Bullet Diameter | 0.355 inches |
| Velocity | 1400 feet per second |
| Muzzle Energy | 296 foot-pounds |
| Ballistic Coefficient (G1) | 0.087 |
| Sectional Density | 0.0771 |
| Case Material | Nickel Plated Brass |
| Primer Type | Boxer |
| Reloadable | Yes |
| Lead-Free | Yes |
| Corrosive | No |
| Suppressor-Safe | Yes |
| Rounds Per Box | 20 |
| Configuration | 10 boxes per case |
| Manufacturer | Underwood Ammo |
This ammunition is loaded to +P specifications, which means higher pressure than standard .380 ACP. You should verify your specific pistol's manual or manufacturer guidance before using +P loads. Many modern .380 platforms are rated for +P, but some are not—never assume. Always consult your firearm's documentation.
Yes, this round is designed specifically for self-defense applications. The solid monolithic bullet is engineered to provide reliable expansion while feeding reliably in semi-automatic pistols, addressing the feed concerns that sometimes plague traditional hollow-point .380 ammunition.
Yes, this ammunition is suppressor-safe and suitable for use on threaded .380 platforms. The solid copper construction and velocity profile work well in suppressed applications.
Each box contains 20 rounds of loaded ammunition. The cases are nickel-plated brass and Boxer-primed, making them reloadable for shooters who handload their own ammunition.
SKU: 194201745 • Width: 2.2in • Height: 1.2in • Depth: 2.7in • Weight: 0.5oz
Availability: In Stock
The Underwood Ammo 679 Xtreme Defense Platinum .380 ACP +P is a purpose-built self-defense round engineered for shooters who demand reliable expansion and barrier-blind performance in a compact pistol caliber. This 68-grain solid monolithic copper projectile delivers 1400 feet per second and 296 foot-pounds of muzzle energy from a typical .380 pocket gun—ballistics that translate to real stopping potential without the liability concerns of traditional hollow-point designs. The lead-free construction makes it clean to handle and shoot, while nickel-plated brass cases withstand the higher pressure of the +P loading and remain reloadable for cost-conscious shooters.
Built for modern self-defense, this round is equally at home in subcompact pistols favored by concealed-carry holders and in full-size .380 platforms. The solid monolithic bullet design eliminates traditional hollow-point feed reliability issues that sometimes plague compact automatics, while still providing the expansion characteristics needed for effective wound trauma. The ammunition is suppressor-safe, expanding your options if you're running a can on a .380 host gun. Each box contains 20 rounds, with convenient 10-box cases available for stocking your defensive supply.
Underwood's Xtreme Defense Platinum represents a step up in .380 ACP performance—the kind of ammunition that doesn't make excuses for the cartridge's inherent limitations, but maximizes what it can deliver. If you carry a .380 and you're serious about the job it's supposed to do, this is ammunition worth running in dry fire, at the range, and in your chamber.
| Caliber | .380 ACP +P |
| Bullet Weight | 68 grains |
| Bullet Type | Solid Monolithic Copper |
| Bullet Diameter | 0.355 inches |
| Velocity | 1400 feet per second |
| Muzzle Energy | 296 foot-pounds |
| Ballistic Coefficient (G1) | 0.087 |
| Sectional Density | 0.0771 |
| Case Material | Nickel Plated Brass |
| Primer Type | Boxer |
| Reloadable | Yes |
| Lead-Free | Yes |
| Corrosive | No |
| Suppressor-Safe | Yes |
| Rounds Per Box | 20 |
| Configuration | 10 boxes per case |
| Manufacturer | Underwood Ammo |
This ammunition is loaded to +P specifications, which means higher pressure than standard .380 ACP. You should verify your specific pistol's manual or manufacturer guidance before using +P loads. Many modern .380 platforms are rated for +P, but some are not—never assume. Always consult your firearm's documentation.
Yes, this round is designed specifically for self-defense applications. The solid monolithic bullet is engineered to provide reliable expansion while feeding reliably in semi-automatic pistols, addressing the feed concerns that sometimes plague traditional hollow-point .380 ammunition.
Yes, this ammunition is suppressor-safe and suitable for use on threaded .380 platforms. The solid copper construction and velocity profile work well in suppressed applications.
Each box contains 20 rounds of loaded ammunition. The cases are nickel-plated brass and Boxer-primed, making them reloadable for shooters who handload their own ammunition.
SKU: 194201745 • Width: 2.2in • Height: 1.2in • Depth: 2.7in • Weight: 0.5oz