Underwood .357 Sig Xtreme Defender 90gr Copper Solid Monolithic Ammo is a high-performance defensive round designed for maximum effectiveness. This ammunition features a solid copper projectile, providing excellent penetration and expansion characteristics. The 90-grain bullet weight offers a balance of speed and energy transfer, making it an ideal choice for personal protection and law enforcement applications. With Underwood's reputation for quality and consistency, these rounds deliver reliable performance when it matters most.
Product Highlights:
| Specifications | |
|---|---|
| Manufacturer | Underwood Ammo |
| Caliber | .357 Sig |
| Bullet Weight | 90 grains |
| Bullet Type | Copper Solid Monolithic |
| Muzzle Velocity | 1700 fps |
| Muzzle Energy | 578 ft-lbs |
| Ballistic Coefficient | .120 |
| Sectional Density | .102 |
| Rounds Per Box | 20 |
| Boxes Per Case | 10 |
| Reloadable | Yes |
| UPC | 816874020118 |
| Manufacturer Part Number | 812 |
| Bullet Design | Xtreme Defender |
Key Features:
The Underwood .357 Sig Xtreme Defender 90gr Copper Solid Monolithic Ammo offers impressive performance characteristics that make it an excellent choice for self-defense. Here's a breakdown of its key features:
| Bullet Type | Copper Solid Monolithic Provides consistent performance and penetration |
| Bullet Weight | 90 grains Lightweight for high velocity and flat trajectory |
| Caliber | .357 Sig Powerful handgun cartridge known for its velocity |
| Rounds per Box | 20 Standard count for defensive ammunition |
| Reloadable | Yes Brass cases can be reloaded for cost savings |
Applications & Use Cases:
- Self-Defense: Designed for personal protection with its Xtreme Defender technology, offering superior stopping power.
- Law Enforcement: Suitable for law enforcement agencies as a duty ammunition due to its reliability and performance.
- Concealed Carry: Ideal for concealed carry firearms chambered in .357 SIG, providing a balance of power and control.
- Target Practice: Can be used for training to familiarize with the recoil and performance of defensive loads.
- Home Defense: Effective option for home defense scenarios, offering reliable expansion and penetration.
Pros and Cons:
Pros
- ✔ Solid Copper Construction: Monolithic copper ensures consistent expansion and retention.
- ✔ Xtreme Defender Technology: Engineered for optimal performance and penetration.
- ✔ Lightweight Bullet: 90 grain weight allows for higher velocities and flatter trajectories.
- ✔ Reloadable: Brass cases are reloadable for cost-effective practice and customization.
- ✔ Made in the USA: Manufactured by Underwood Ammo for quality assurance.
Cons
- ✘ Specialized Caliber: .357 Sig is less common, potentially limiting firearm compatibility.
- ✘ Higher Cost: Premium defensive ammunition typically comes at a higher price point.
- ✘ Overpenetration Risk: Solid copper bullets may have increased penetration in some scenarios.
- ✘ Limited Capacity: 20-round boxes offer fewer rounds compared to bulk ammunition options.
About Underwood Ammo:
Underwood Ammo, founded in 2013, has quickly established itself as a premier manufacturer of high-performance ammunition. Based in Sparta, Illinois, Underwood is known for pushing the boundaries of ballistic performance. The company specializes in producing some of the most powerful commercially available ammunition, catering to self-defense, hunting, and competitive shooting markets. Underwood's commitment to innovation is evident in their use of cutting-edge materials and designs, such as their Xtreme Defender line featuring solid copper projectiles. Their manufacturing process involves stringent quality control measures, ensuring each round meets their exacting standards for reliability and performance. Underwood Ammo has gained a strong following among firearms enthusiasts for their consistent quality and the exceptional power of their loads, often exceeding the velocities and energies of comparable rounds from other manufacturers.
