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Underwood 10mm Auto Ammo 180 Grain XTP Jacketed Hollow Point - 243
Underwood 10mm Auto 180 grain XTP Jacketed Hollow Point ammunition is designed to deliver a balance of velocity, controlled expansion, and consistent penetration for defensive and field applications. Loaded with Hornady’s XTP (eXtreme Terminal Performance) bullet, this round is engineered to expand reliably while maintaining structural integrity. With a muzzle velocity of 1,300 feet per second and 676 foot-pounds of energy, it provides a full-power 10mm performance profile with strong downrange impact. The 180 grain weight offers a stable trajectory and consistent penetration across a range of distances. Nickel-plated brass casings support reliable feeding and improved corrosion resistance during carry and storage. Packaged in 20-round boxes or 200-round cases, with bulk ammo shipping free through Target Sports USA.
Features and Specifications:
- Caliber: 10mm Auto for semi-automatic handgun platforms
- Bullet Type: 180 grain Jacketed Hollow Point (Hornady XTP)
- Velocity: Muzzle velocity of 1,300 fps for full-power performance
- Nickel-Plated Brass: Enhances feeding reliability and corrosion resistance
- Flash Suppressed Powder: Helps reduce visible muzzle flash in low-light conditions
- Packaging: 20-round boxes or 200-round cases
Deep Dive
Overview
Underwood 10mm Auto 180 grain XTP ammunition is built to deliver consistent terminal performance through controlled expansion and dependable penetration. The Hornady XTP bullet is designed to expand in a predictable manner while maintaining sufficient mass to continue penetrating through the target. This combination supports effective energy transfer without excessive fragmentation. The 1,300 fps velocity provides a full-power shooting experience with stable recoil characteristics, making it suitable for both defensive carry and field use. This load is commonly used for personal defense and can also be applied in hunting situations where controlled expansion and reliable penetration are required.
History and Development
Underwood Ammo has established its reputation by producing high-performance handgun ammunition using premium components and precise loading techniques. By pairing Hornady’s XTP bullet design with carefully selected propellants and consistent manufacturing standards, Underwood developed a load that balances expansion and penetration. The XTP bullet itself has been widely used across defensive and hunting applications due to its ability to maintain structural integrity while expanding in a controlled manner. This combination reflects Underwood’s focus on delivering reliable performance across real-world conditions.
Common Questions and FAQs
- What is the Hornady XTP bullet designed to do?
The XTP bullet is designed for controlled expansion and consistent penetration, helping maintain weight while expanding on impact.
- What is this ammo best used for?
It is designed for personal defense and can also be used for hunting where controlled expansion is needed.
- What are the benefits of nickel-plated brass cases?
Nickel plating improves feeding reliability, corrosion resistance, and durability during storage or carry.
- Is this ammunition supersonic?
Yes, this load is supersonic and travels above the speed of sound.
- Is this ammunition safe for suppressor use?
Yes, it is safe for suppressor use where applicable and legal.
The 'Round Up'
Perfect Fit for:
Why It Stands Out:
Underwood 10mm Auto 180 grain XTP Jacketed Hollow Point ammunition offers a balanced combination of expansion, penetration, and consistent performance. Its use of the Hornady XTP bullet supports predictable terminal behavior across defensive and field applications. The full-power velocity provides strong impact energy, while nickel-plated brass enhances reliability in real-world conditions. Built with Underwood’s focus on precision and performance, it delivers dependable results for shooters seeking a versatile 10mm load.
| Field | Details |
| MPN | 243 |
| UPC | 816874020859 |
| Manufacturer | Underwood |
| Platform | Handgun |
| Ammo Application | Personal Defense |
| Ammo Type | Jacketed Hollow Point |
| Caliber | 10mm Auto |
| Grain Weight | 180 |
| Quantity Per Package | Box of 20 / Case of 200 |
| Test Barrel Length | Not Provided |
| Muzzle Velocity | 1300 fps |
| Muzzle Energy | 676 ft lbs |
| Ballistic Coefficient (G1) | Not Provided |
| Case Type | Nickel Plated Brass |
| Primer Type | Centerfire / Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Lead Free | No |
| Staked Primer | Not Provided |
| Country of Origin | USA |
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