The Underwood Ammo 348 XTP 500 S&W Magnum 350gr Jacketed Hollow Point is engineered as a high performance handgun load for shooters who demand consistent results. Built around the Hornady eXtreme Terminal Performance (XTP) bullet and housed in nickel-plated brass, this cartridge is designed for deep penetration, controlled expansion, and reliable feeding in powerful .500 S&W Magnum revolvers.

This round is well suited for medium to large game hunting as well as serious defensive use where maximum energy transfer and predictable terminal behavior are critical. Its supersonic velocity and carefully tuned powder charge deliver impressive muzzle energy while flash-suppressed powder helps preserve sight picture in low light. Underwood’s focus on real-world testing and quality control underscores the brand’s reputation for precision and dependable performance.

Key Features:

• Manufacturer: Underwood Ammo
• Model: 348 XTP 500 S&W Magnum 350gr Jacketed Hollow Point
• Caliber: 500 S&W Magnum
• Bullet Type: Jacketed Hollow Point (XTP)
• Bullet Weight: 350 Grains
• Muzzle Velocity: 1912 Feet Per Second
• Muzzle Energy: 2842 Foot Pounds
• Case Type: Nickel-Plated Brass
• Rounds Per Box: 20
• Boxes Per Case: 10
• Velocity Rating: Supersonic