Description
This load uses Hornady's eXtreme Terminal Performance bullets, which are engineered for controlled expansion and deep penetration. The XTP design features a serrated jacket and progressively tapered construction that promotes reliable expansion across a range of velocities, making it effective even from shorter barrels. Muzzle velocity hits 1250 feet per second with 434 ft-lbs of muzzle energy, giving you the velocity bump that +P pressure delivers without sacrificing controllability.
What Makes Underwood 38 Special +P Stand Out
Underwood loads this round to maximize what the cartridge can deliver. Rather than playing it safe, they work right up to SAAMI pressure limits, which means you get genuine velocity gains over standard pressure ammunition. The nickel-plated brass cases aren't just for looks either. They resist corrosion better than traditional brass, feed more reliably in semi-automatic firearms, and stay cleaner during reloading if that's part of your routine.
Field-Tested Reliability and Quality Control
Every batch gets tested with real firearms that customers actually carry and shoot. The powder is flash-suppressed so your low-light vision stays intact if you ever need to use your gun in poor lighting. New production, boxer-primed, and non-corrosive, this ammunition delivers consistency across every round. The 125-grain bullet weight has proven itself as the go-to for .38 Special self-defense, offering the right balance between penetration and expansion without excessive recoil.
Built for Your 38 Special
Twenty rounds per box means you get quality over quantity. This is ammunition made for carry, home defense, and situations where performance matters. Just remember this is +P spec, so your revolver needs to be rated for it. If you're running a modern firearm in good condition, you'll get reliable ignition, clean burning, and the terminal performance you expect from serious defensive ammunition.
Key Specifications
- Caliber: .38 Special +P
- Bullet Weight: 125 grains
- Bullet Type: Jacketed Hollow Point (XTP)
- Muzzle Velocity: 1250 feet per second
- Muzzle Energy: 434 ft-lbs
- Case Material: Nickel-Plated Brass
- Primer: Boxer-primed, reloadable
- Rounds per Box: 20
- Manufacturer: UNDERWOOD AMMO
- Manufacturer Part Number: 129
- UPC: 816874020484
- Powder: Flash-suppressed
- Production Type: New production, non-corrosive
What’s Included
- 20 rounds of 38 Special +P ammunition
Frequently Asked Questions
Can I use this 38 Special +P ammunition in any 38 Special revolver?
Not all revolvers are rated for +P ammunition. Your firearm needs to be specifically marked or rated for +P pressure loads. This is especially true for older revolvers or lighter aluminum-frame models. Check your gun's manual or contact the manufacturer to be sure before shooting these rounds.
Why is Underwood 38 Special +P loaded to 1250 fps when other brands are slower?
Underwood loads right up to SAAMI pressure limits instead of loading conservatively. This gives you genuine velocity and energy gains over standard factory loads while staying within safe pressure specifications. You get real performance gains, but your firearm needs to be in good condition to handle hot loads reliably.
What does the XTP bullet do that a regular hollow point doesn't?
Hornady's XTP features a progressively tapered jacket and serrated design that promotes controlled expansion across a range of velocities. This means it expands reliably even from short barrels where velocity is lower. The construction also helps prevent nose cavity clogging and maintains consistent performance through barriers like heavy clothing.
Are the nickel-plated brass cases reloadable?
Yes. These rounds are boxer-primed with reloadable brass, so you can reload them after firing if you hand load ammunition. The nickel plating makes them easier to clean and organize during the reloading process compared to standard brass.




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