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The Xtreme Defender is a different animal compared to traditional hollow points. Built on Underwood's proven Xtreme Penetrator platform, this load pairs a lightweight 90-grain solid copper bullet with velocity tuned for real-world stopping power without excessive felt recoil. That matters especially in compact 9mms where managing recoil on follow-up shots can mean the difference between good shooting and rushed misses.
The bullet itself has no hollow point cavity. Instead, it features precisely machined radial flutes that channel fluid dynamics in soft tissue to create a massive wound channel without needing traditional expansion. Think of it as directing kinetic energy laterally rather than relying on mechanical expansion. The solid copper construction means it doesn't care about what's in the way. Intermediate barriers like drywall, sheet metal, or glass don't diminish terminal performance the way they do traditional JHPs. That barrier-blind characteristic makes it genuinely valuable for home defense scenarios where you might shoot through walls, car doors, or winter clothing.
At 1400 feet per second with 392 foot-pounds of muzzle energy, these rounds stay supersonic out of typical defensive pistol barrels. That velocity drives the bullet deep into its target, consistently penetrating to around 15-18 inches depending on what it encounters. Underwood runs each load through field testing with real firearms people actually carry, not just lab conditions. They also build in flash-suppressed powder so if you ever need to fire in low light, your night vision doesn't get destroyed by muzzle flash on the first shot.
The nickel-plated brass cases feed reliably and resist corrosion better than traditional brass over long storage. These are new production, non-corrosive loads with Boxer primers, so if reloading interests you down the road, they're ready to go. The lightweight bullet weight keeps overall felt recoil manageable while maintaining the velocity needed to perform reliably across different firearms.
Yes, the solid monolithic design has a narrower nose profile similar to full metal jacket rounds, so it feeds more reliably in semi-auto pistols than traditional hollow points. The nickel-plated brass cases also promote smooth feeding through various firearm actions. Underwood field-tests all their loads in real production firearms before finalizing specifications.
The solid copper construction genuinely defeats intermediate barriers. Traditional hollow points can fail when they hit barriers because expansion gets disrupted. The Xtreme Defender's fluted design maintains penetration through drywall, sheet metal, and automotive glass because it's not relying on mechanical expansion. Underwood publishes independent ballistic test data on their website showing this barrier performance.
Absolutely. Velocity is just one part of terminal performance. The 90-grain weight at 1400 fps delivers solid momentum combined with the fluted bullet's wound-creating mechanics. Many defensive rounds run 1150-1300 fps, so this load has velocity to spare. The reduced recoil compared to heavier 124-grain loads means faster, more accurate follow-up shots if needed.
Yes, these are Boxer-primed, non-corrosive, new production brass cases. The nickel plating is thinner than typical commercial nickel plating, so reloading dies should work without issue. Just make sure your reloading equipment is clean to avoid any buildup from the nickel coating over time.
| Caliber/Gauge | 9mm |
|---|---|
| Case Material | Nickel-Plated Brass |
| Cost per Round | 1.40 |
| Grains | 90 gr |
| Manufacturer | |
| Manufacturer Part Number | 875 |
| Shipping Weight | 0.5 |
| Units per Box | 20 |
| UPC | 816874027643 |
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