Underwood Handgun Ammunition for the .500 Auto Max is new production, non-corrosive, boxer-primed, and supplied in reloadable cases. The load propels a 350-grain hollow-point bullet at a listed velocity of 2300 feet per second and a listed muzzle energy of 4112 ft lbs. The cartridge cases are nickel-plated brass and each box contains 20 loaded rounds. The manufacturer lists this ammunition as containing lead and suitable for hunting and defensive applications.
Key Specifications
- Cartridge caliber is listed as .500 for the .500 Auto Max cartridge.
- The bullet weight is 350 grains.
- The listed muzzle velocity is 2300 feet per second.
- The listed muzzle energy is 4112 ft lbs.
- The bullet material is listed as Brass and the product is also listed as containing lead.
- The cartridge case material is Nickel Plated Brass.
- The bullet has a reported G1 ballistic coefficient of 0.145.
- The bullet’s sectional density (SD) is listed as 0.2.
- The round is described as supersonic.
- Each box contains 20 loaded pieces.
This Underwood .500 Auto Max load delivers a heavy-for-caliber performance profile in a practical 20-round package. Its high-energy ballistics, robust cartridge construction, and listed component details make it suitable for field use where powerful handgun ammunition is required.
