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The Xtreme Defender from Underwood brings a proven defensive concept to the .380 ACP platform. This ammunition uses solid copper construction instead of traditional jacketed hollow points, which means it performs consistently whether it encounters barriers like heavy clothing or sheet metal, or passes through clear targets. That reliability comes from the bullet's design. The copper body won't deform or deflect, maintaining its path and creating a larger permanent wound cavity than most hollow points, with controlled penetration around 18 inches.
The .380 cartridge has always been limited by its inherent muzzle energy, which is why traditional hollow points can sometimes fail to expand reliably. The Xtreme Defender solves this with precision-machined flutes that create hydraulic pressure on impact, generating tissue damage through fluid dynamics rather than mechanical expansion. You get all the penetration benefits of a solid projectile with a wound channel that rivals or exceeds traditional expanding ammunition.
These rounds leave the muzzle at 1300 feet per second, delivering 255 foot-pounds of energy. They're supersonic and non-corrosive, loaded in reloadable nickel-plated brass cases for shooters who want to recycle brass. The flash-suppressed powder keeps your vision clear in low-light situations, which matters if you ever need to use them. Each box contains 20 rounds.
If you carry a small .380 in everyday situations, this ammunition represents a meaningful upgrade. The lead-free construction suits shooters in restricted environments, and the monolithic design feeds reliably in guns that might be picky about ammunition. The nickel-plated brass prevents corrosion during extended storage, which is especially important for rounds kept in a defensive carry gun. This is ammunition built to perform when it counts.
These rounds are designed with feeding reliability in mind. The solid copper monolithic bullets have a different profile than traditional hollow points, so some firearms may require a barrel feed ramp inspection or light polishing for optimal performance. Many users report they cycle fine in modern compact models, but it's worth testing a box to verify function in your specific gun.
Solid copper with fluted geometry solves a real problem in the .380. At lower velocities, hollow point bullets can fail to expand or clog with material when passing through clothing. The flutes force fluid pressure that creates a large wound cavity through hydraulics instead, which works consistently regardless of barriers. The result is barrier-blind performance that traditional hollow points can't match.
The Xtreme Defender is premium defensive ammunition, not range fodder. It launches faster than standard loads and delivers deeper, more predictable penetration with a larger wound cavity. The lead-free solid copper construction is cleaner to shoot and perform better through barriers, but it's priced accordingly. You're paying for terminal performance you hope you never need.
Yes. The nickel-plated brass cases are boxer-primed and reloadable, which helps offset the higher initial cost. The cases resist tarnishing and corrosion better than plain brass, which is useful if you store fired brass for months before reloading.
| Caliber/Gauge | .380 ACP |
|---|---|
| Case Material | Nickel-Plated Brass |
| Cost per Round | 1.40 |
| Grains | 68 gr |
| Length | 2.8000 |
| Manufacturer | |
| Manufacturer Part Number | 638 |
| Shipping Weight | 0.385 |
| Units per Box | 20 |
| UPC | 816874020040 |
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