Underwood .357 Magnum 125gr XTP Jacketed Hollow Point

Premium .357 Magnum Self-Defense and Hunting Ammunition

Underwood Ammo delivers serious performance with this .357 Magnum load, combining proven bullet technology with thoughtful case design for reliability and reloadability.

Bullet Performance

Hornady XTP Design: The eXtreme Terminal Performance bullet is engineered for controlled expansion and deep penetration—essential characteristics for both self-defense and hunting applications. The 125-grain projectile leaves the barrel at 1700 feet per second, generating 802 foot-pounds of muzzle energy.

Case Construction

• Nickel-Plated Brass: Superior to standard brass in multiple ways
  • Enhanced corrosion resistance during storage
  • Improved feeding reliability across all firearm actions
  • Reduced tarnishing from moisture and contact with leather or other metals
  • Easier cleanup during reloading
• Boxer-Primed: Fully reloadable for cost-conscious shooters
• Non-Corrosive: Safe for all firearms and storage conditions

Practical Features

Flash-Suppressed Powder: Formulated to minimize muzzle flash in low-light defensive situations, preserving your night vision when it matters most.

Suppressor-Safe: This ammunition is safe to use with sound suppressors, expanding your options for training and hunting.

Field-Tested: Underwood validates every load using real-world firearms and conditions that shooters actually encounter.

Specifications

• Caliber: .357 Magnum
• Bullet Weight: 125 grains
• Bullet Type: Jacketed Hollow Point
• Muzzle Velocity: 1700 fps
• Muzzle Energy: 802 ft-lbs
• Ballistic Coefficient (G1): 0.151
• Sectional Density: 0.140
• Packaging: 20 rounds per box

This is serious ammunition for serious purposes—whether you're training for self-defense or pursuing game in the field.