SKU: CSSI|UB648

Underwood Ammo Xtreme Penetrator Handgun Ammunition 10mm Auto140 gr Solid 1500 fps 20/ct

Features:

  • This ammo is for cartridge size 10mm Auto.
  • The bullet is made from Copper.
  • The diameter (caliber) of this bullet is 0.4.
  • This bullet weighs 140 grains.
  • This bullet leaves the barrel at 1500 feet per second.
  • The ammo case is made from Nickel Plated Brass.
  • This ammo is a proven round for hunting.
  • The bullet in this product does NOT contain lead.
  • This round is designed to be supersonic and travels faster than the speed of sound.
  • The muzzle energy of this ammo is 700 ft lbs.
  • This product has been designed to be an effective choice for the ultimate in self-defense applications.
  • The bullet in this product has a Sectional Density (SD) of 0.125. SD is the ratio of an object's mass to its cross sectional area with respect to a given axis. It conveys how well an object's mass is distributed (by its shape) to overcome resistance along that axis.
  • This ammo IS SAFE to use in a suppressor.
  • Each box of ammo contains 20 loaded pieces of ammunition.
  • This ammo is manufactured by Underwood Ammo
Underwood Ammo Xtreme Penetrator Handgun Ammunition 10mm Auto140 gr Solid 1500 fps 20/ct
SKU CSSI|UB648 Category

Underwood Ammo Xtreme Penetrator Handgun Ammunition 10mm Auto140 gr Solid 1500 fps 20/ct

$41.00

1055 in stock

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FAQ

BJ Firearms LLC is a federally licensed firearms business focused on providing quality firearms, accessories, and related services while promoting responsible ownership, education, and community engagement.

The company was founded to serve firearm enthusiasts with knowledgeable service, real-world experience, and a commitment to professionalism and safety.

We focus on real experience, personalized service, hands-on product knowledge, and community involvement — not just sales. Our goal is to help customers make informed decisions and feel confident with their equipment.

Yes. We operate as a federally licensed firearms dealer (FFL), following all applicable federal, state, and local regulations.

Yes. We partner with trusted suppliers to provide quality products and reliable sourcing.

Yes. We partner with content creators and industry professionals to provide real-world insights and experiences.

We work with everyone — from first-time buyers to experienced enthusiasts. Education and guidance are a big part of what we do.

We offer firearms, accessories, gear, and related equipment depending on availability and customer needs.

Yes. We help customers evaluate their needs, experience level, and intended use to find the right fit.

Yes. Depending on the request, we can help source specific products or assist with custom configurations.

Yes. We actively engage in hands-on experiences, demonstrations, and community-related firearm activities when possible.

Yes. We support content that helps people learn about equipment, safety, and responsible firearm ownership.

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Customer Reviews

“Outstanding customer service.” I had a lot of questions before buying, and they walked me through everything without pressure. Super knowledgeable and easy to work with. You can tell they actually care about their customers.
Verified Customer
“Best experience I’ve had buying gear.” Professional, responsive, and honest. They helped me choose exactly what I needed without overselling anything. I’ll definitely be coming back.
Verified Customer
“Great people, great service.” Very down-to-earth and easy to talk to. They explain things clearly and make sure you understand your options. Highly recommend, especially if you’re new.
Verified customer

BJ FIREARMS LLC

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