$43.99
18 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
When you need ammunition that delivers consistent straight-line penetration without expansion, the Xtreme Penetrator Platinum brings serious capability to the 10mm. This is engineered ammunition, not commodity ammo. Each round combines Lehigh Defense's CNC-machined copper projectile with Underwood's high-performance loading, creating a tool purpose-built for medium and large game where barrier-blind performance matters.
The 140-grain solid copper bullet features a fluted nose design that works differently than traditional hunting rounds. Instead of relying on expansion to create wound damage, the precision flutes and blunt profile increase hydraulic pressure on impact, generating a wound channel with minimal deformation. Field tests on the 140-grain load showed impressive penetration through barriers without deflection, which explains why this load appeals to those hunting in thick cover or dealing with unexpected obstacles.
Nickel-plated brass cases resist tarnishing and corrosion compared to traditional brass, which matters if you're storing ammunition for extended periods or shooting in humid conditions. The cases are boxer-primed and reloadable, giving you options down the road. Flash-suppressed powder preserves your night vision if you ever need to use your firearm in low light. Each box ships with 20 rounds ready to work in modern 10mm semi-autos, delivering 1,500 feet per second and 700 foot-pounds of energy from standard handgun barrels.
Being solid copper, this ammunition works in areas with lead restrictions and is clean to shoot indoors. The monolithic design also eliminates traditional lead fouling concerns and runs smoother through the action compared to some alternatives.
The Xtreme Penetrator uses a solid copper design with fluted channels and a blunt nose instead of expanding on impact. This design creates a permanent wound channel through hydraulic pressure rather than expansion, delivering straight-line penetration and performing consistently through barriers without deformation or deflection.
Yes, this load is specifically engineered for hunting medium to large game where penetration is critical. The lead-free construction also makes it legal for areas with lead restrictions. The 140-grain bullet at 1,500 fps delivers 700 foot-pounds of energy, providing the power needed for ethical, effective field use.
Absolutely. The cases are boxer-primed and designed to be reloadable. Nickel-plated brass actually provides advantages for reloaders, as it resists corrosion during storage and won't tarnish in your equipment, making cleanup and sorting easier than traditional brass.
Underwood tests all their ammunition in real firearms to ensure reliable feeding and cycling. The blunt nose profile and fluted design are engineered specifically for reliable magazine feeding in modern 10mm semi-auto pistols without the feeding issues that can sometimes affect other solid-copper designs.
| Caliber/Gauge | 10mm |
|---|---|
| Case Material | Nickel-Plated Brass |
| Cost per Round | 2.20 |
| Grains | 140 gr |
| Length | 3.1500 |
| Manufacturer | |
| Manufacturer Part Number | 941 |
| Shipping Weight | 0.7 |
| Units per Box | 20 |
| UPC | 816874023775 |
You must be logged in to post a review.
Reviews
There are no reviews yet.