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Underwood's .38 Super +P XTP ammunition combines proven bullet technology with careful formulation designed for real-world use. Each box contains 20 rounds loaded with Hornady's eXtreme Terminal Performance bullets, recognized across the industry for their stopping power and consistent expansion across a wide velocity range.
These rounds deliver 1,350 feet per second with 502 foot-pounds of muzzle energy—ballistics that put this round in a serious performance category. The 124-grain jacketed hollow point is built to expand reliably and penetrate deep, whether you're shooting for self-defense or hunting small to medium game. The XTP design uses variable jacket thickness and strategic serrations that help control expansion even at lower velocities, giving you terminal performance you can count on.
Nickel-plated brass cases offer real advantages over standard brass. They resist corrosion better during long-term storage, feed more reliably through your gun's action, and are easier to reload if you process your own brass. The flash-suppressed powder keeps your low-light vision intact if you ever need to use this ammunition in dim conditions.
These loads are manufactured as new production, non-corrosive ammunition with boxer-primed, reloadable cases. The ammunition is loaded in Underwood's Super Comp case, which uses a competition-profile rim and geometry designed to feed reliably across all .38 Super Auto pistols—from stock service guns to race-ready builds. If you own a .38 Super Auto and want quality ammunition that works, this is solid choice.
.38 Super +P ammunition is loaded to higher pressures than standard .38 Super—36,500 psi versus lower pressure loadings. This extra pressure produces higher velocity and more energy, which translates to better performance for self-defense and hunting applications. The +P designation on the headstamp is there specifically to differentiate these hotter loads.
You should always check your firearm manufacturer's specifications first, but .38 Super +P ammunition is designed to function in any .38 Super Auto pistol. However, never shoot these rounds in a .38 Special gun—they're different cartridges, and the higher pressures could damage your firearm. This ammunition is specifically loaded for .38 Super Auto only.
XTP bullets are engineered with variable jacket thickness that controls expansion across a wide range of velocities. Strategic serrations divide the bullet into sections, allowing for reliable expansion and deep penetration whether you're shooting through intermediate barriers or at close range. This design consistency is why competitive shooters and hunters rely on XTPs.
Nickel-plated cases resist corrosion better during storage, especially in humid conditions or when stored near leather or other materials. They also feed more reliably through your gun's magazine and chamber, and if you reload, they're easier to clean and process. The nickel coating won't tarnish the way raw brass can over time.
Yes. These are boxer-primed, new production cases that can be reloaded. After you fire them, you can deprime, clean, resize, and load them again. This makes them economical if you process your own ammunition.
Super Comp is a competition-profile case with a rim geometry designed to feed reliably in high-capacity magazines used in competition race guns and modern production pistols chambered in .38 Super Auto. It improves feeding consistency across all types of .38 Super guns, from standard pistols to competition builds.
| UPC | 816874020620 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 144 |
| Caliber/Gauge | .38 Super Auto |
| Case Material | Nickel-Plated Brass |
| Grains | 124 gr |
| Length | 2.6500 |
| Units per Box | 20 |
| Cost per Round | 1.15 |
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