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Underwood Ammunition

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Spicy but works good on compensated pistols

Underwood Ammunition is proudly made in the USA and is renowned for its high-velocity, hard-hitting performance tailored for self-defense, hunting, and tactical use. Featuring premium product lines like Xtreme Defender, Xtreme Penetrator, and Match Grade, Underwood uses cutting-edge bullet designs from Lehigh Defense and other top suppliers to ensure maximum energy transfer, deep penetration, and precision accuracy. Built with tight quality control and premium components, Underwood rounds are trusted by professionals and serious shooters. Target Sports USA carries Underwood Ammo in bulk with fast shipping and competitive pricing on calibers like 9mm Luger ammo, .380 ACP ammo, .357 ammo, and 38 special.

Average Rating
4.8starstarstarstarstar
Country of origin
United Statesflag
Price range
$17.99 - $749.90

…Enjoy free shipping on Underwood Ammunition when you buy in bulk ammunition quantities at Target Sports USA.

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OUR TOP UNDERWOOD AMMO RECOMMENDATIONS

Underwood Sporting 9mm Luger Ammunition 115 Grain Jacketed Hollow Point - 115

Underwood Sporting 9mm Ammunition 115 Grain Jacketed Hollow Point - 115

Underwood 9mm 115-grain JHP delivers 1200 fps and 368 ft-lbs with Nosler Sporting Handgun bullets. Featuring nickel-plated brass, reloadable boxer primers, and flash-suppressed powder, it offers reliable accuracy and reduced muzzle flash.

Manufacturer UNDERWOOD
Caliber 9MM Luger
Bullet Type Jacketed Hollow Point
Grain 115
Muzzle Velocity 1200 fps
Muzzle Energy 368 ft lbs
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Underwood 357 Magnum Ammunition 125 Grain TAC-XP Hollow Point - 126

Underwood 357 Magnum Ammunition 125 Grain TAC-XP Hollow Point - 126

Underwood .357 Magnum 125-grain TAC-XP Hollow Point delivers 1650 fps and 756 ft-lbs, ideal for hunting or defense. Features flash-suppressed powder, nickel-plated brass, and reloadable boxer-primed cases for reliable performance.

Manufacturer UNDERWOOD
Caliber 357 Magnum
Bullet Type Hollow Point
Grain 125
Muzzle Velocity 1650 fps
Muzzle Energy 756 ft lbs
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Underwood Maximum Expansion 40 S&W Ammunition 140 Grain Solid Monolithic - 250

Underwood Maximum Expansion 40 S&W Ammunition 140 Grain Solid Monolithic - 250

Underwood 40 S&W 140 gr Maximum Expansion Solid Monolithic uses Lehigh's razor-sharp petals for massive wound channels. Nickel-plated brass, flash-suppressed powder, reloadable boxer-primed cases lead free at ~1050 fps for hunting/defense.

Manufacturer UNDERWOOD
Caliber 40 S&W
Bullet Type Solid Monolithic
Grain 140
Muzzle Velocity 1050 fps
Muzzle Energy 343 ft lbs
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TOP USES FOR UNDERWOOD AMMO

  • Self-Defense and Concealed Carry
  • Hunting Medium and Large Game
  • Home Defense Applications
  • Range Training and Target Practice
  • Competitive Shooting

POPULAR UNDERWOOD PRODUCT LINES

  • Underwood Xtreme Defender
  • Underwood Xtreme Penetrator
  • Underwood Match Grade
  • Underwood Lehigh Defense
  • Underwood Controlled Fracturing

UNDERWOOD AMMUNITION TYPES

  • Xtreme Defender (Fluted Solid Copper)
  • Xtreme Penetrator (Deep Penetration)
  • Jacketed Hollow Point (JHP)
  • Full Metal Jacket (FMJ)
  • Controlled Fracturing Projectiles

A QUICK "PRIMER" ON UNDERWOOD AMMO

Underwood Ammunition has earned a strong reputation among shooters for producing high-performance cartridges designed for maximum effectiveness in self-defense, hunting, and precision shooting. Founded in the United States, Underwood focuses on innovation and performance, often loading its rounds with advanced bullet designs from Lehigh Defense, including the Xtreme Defender and Xtreme Penetrator lines. These solid copper projectiles use fluid dynamics instead of traditional expansion to achieve deep penetration and wide wound channels, making them unique in the ammunition market.

In addition to its specialty defensive rounds, Underwood also manufactures a variety of calibers in traditional Jacketed Hollow Point (JHP), Full Metal Jacket (FMJ), and Match Grade options, giving shooters flexibility for range training, competitive use, and home defense. Known for producing consistent velocities and using premium components, Underwood is widely trusted by shooters who want uncompromising power and reliability. Whether for concealed carry, handgun hunting, or specialized applications, Underwood Ammunition is recognized as a premium option that pushes the limits of performance while maintaining dependable quality.

TOP CONSIDERATIONS WHEN BUYING UNDERWOOD AMMO

When choosing Underwood Ammunition, it is important to match the right load to your firearm and intended application. Known for powerful ballistics and premium bullet designs, Underwood produces specialized rounds that can serve hunters, concealed carriers, and competitive shooters. Here are the key factors to consider before purchasing.

Use Case Matching: Underwood offers purpose-driven ammo lines. The Xtreme Defender and Xtreme Penetrator are excellent for self-defense and duty use, while Match Grade loads are ideal for accuracy-driven range or competition shooting. Hunters benefit from hard-hitting calibers like 10mm Auto and .357 Magnum.

Product Line Differences: Each Underwood line has unique strengths. Xtreme Defender uses fluted solid copper bullets for controlled wound channels, while Xtreme Penetrator focuses on deep penetration. Match Grade loads deliver precision with carefully selected components. Controlled Fracturing rounds are designed for rapid energy transfer and fragmentation.

Caliber Availability: Underwood manufactures a wide variety of popular calibers, including 9mm, .380 ACP, .357 Magnum, 10mm Auto, .45 ACP, and powerful revolver rounds like .44 Magnum. This range makes it a versatile choice for defensive carry, hunting, or sport shooting.

Performance Expectations: Underwood is known for producing hotter loads than many factory offerings, often maximizing velocity and energy. This results in powerful terminal performance but can also mean sharper recoil, making caliber and firearm selection important for the shooter.

Price & Value: As a premium ammunition brand, Underwood ammo typically comes at a higher price point than standard FMJ range rounds. However, shooters value its advanced bullet designs and proven performance, making it a worthwhile investment for self-defense and hunting.

THE UNDERWOOD AMMO "ROUND UP"

Underwood Ammunition has established itself as a premium choice for shooters who prioritize innovation, power, and precision. Known for its use of Lehigh Defense bullet technology, Underwood pushes the boundaries of defensive and hunting ammo with designs like the Xtreme Defender and Xtreme Penetrator, which deliver exceptional terminal performance without relying on traditional hollow point expansion.

From defensive 9mm and .380 ACP loads to powerful hunting rounds in 10mm Auto, .357 Magnum, and .44 Magnum, Underwood caters to a wide range of shooting needs. Whether for concealed carry, hunting, or accuracy-focused competition, Underwood ammo delivers consistent velocities, dependable reliability, and cutting-edge ballistic performance. At Target Sports USA, bulk Underwood ammo is available with free shipping, giving shooters an affordable way to stock up on one of the industry's most trusted high-performance brands.

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UNDERWOOD AMMO FREQUENTLY ASKED QUESTIONS

Is Underwood ammo any good?+
Yes, Underwood Ammunition is widely regarded as a premium option for shooters who want maximum performance. Known for its high velocities, advanced bullet designs, and consistent quality, it is trusted for self-defense, hunting, and competition use.
Where is Underwood ammo made?+
Underwood Ammunition is proudly manufactured in the United States. The company maintains strict quality standards, ensuring that each cartridge is loaded with premium components for consistent accuracy and reliability.
Top 5 Underwood ammo for hunting+
Popular Underwood hunting choices include the 10mm Auto Xtreme Penetrator, .357 Magnum Xtreme Defender, .44 Magnum Xtreme Hunter, .45 ACP +P Xtreme Defender, and .454 Casull loads. Each is designed to provide powerful terminal performance for medium to large game.
What is the best Underwood ammo for home defense?+
The Xtreme Defender line is one of the best choices for home defense. Its fluted solid copper design offers reliable penetration and controlled wound channels without the risk of over-expansion, making it effective in defensive scenarios.
What makes Underwood Xtreme Defender different from hollow points?+
Unlike traditional JHPs that expand on impact, Xtreme Defender rounds use fluid dynamics from their fluted copper design to create wound channels. This ensures consistent performance and reliable penetration even through barriers.
Is Underwood ammo safe for concealed carry?+
Yes, many Underwood loads are specifically designed for concealed carry. Options like the 9mm Xtreme Defender and .380 ACP Xtreme Defender are popular among everyday carriers seeking maximum effectiveness in a compact firearm.
Does Underwood make reloading components?+
While Underwood focuses on loaded ammunition, many of its projectiles come from Lehigh Defense, which offers bullets separately for reloaders. This allows shooters to replicate Underwood performance through handloading.
Does Underwood ammo have more recoil than other brands?+
Yes, Underwood is known for loading hotter rounds with higher velocities, which often results in sharper recoil compared to standard ammunition. Shooters should ensure they are comfortable with recoil management before choosing certain calibers.
What calibers is Underwood ammo available in?+
Underwood manufactures a broad selection, including popular calibers like 9mm, .380 ACP, .357 Magnum, 10mm Auto, .45 ACP, .44 Magnum, and specialty revolver cartridges. This versatility makes it suitable for defensive carry, hunting, and competition.
Is Underwood ammo worth the price?+
Yes, while priced higher than typical FMJ or training ammo, Underwood offers premium performance that is difficult to match. Its advanced bullet designs, consistent accuracy, and trusted reliability make it a strong value for self-defense and hunting.
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