Underwood Ammo 348 XTP 500S&WMag 350gr Jacketed Hollow Point 20 Per Box/10 Case

The Underwood Ammo 348 XTP is a heavyweight .500 S&W Magnum round built for serious power and reliability. Loaded with a 350-grain jacketed hollow point bullet, this ammunition delivers the kind of velocity and energy you need for big-bore handgun hunting and self-defense work. Each box contains 20 rounds of new production ammunition with non-corrosive boxer primers and reloadable brass cases, so you can stretch your investment downrange and get back to reloading once you've put in the work.

At 1912 feet per second muzzle velocity and 2842 foot-pounds of energy, this is a serious round. The XTP hollow point is designed to expand reliably on impact while maintaining the structural integrity needed to reach vital zones on large game. With a sectional density of 0.2, the 350-grain bullet penetrates effectively—a key factor when you're trusting your ammunition to perform when it matters. The ballistic coefficient of 0.145 (G1) means you're working with realistic flight characteristics for a big, heavy projectile; don't expect match-rifle stability, but do expect the energy delivery to match the velocity figures downrange.

Whether you're hunting with a .500 S&W revolver or using it for backup protection in remote areas, Underwood's quality control and consistency make this a round you can trust. The ammunition is safe for use in suppressors if you're running that setup, and the reloadable brass means you can reload and shoot again without breaking the bank on premium big-bore ammo.

Key Features

• 350-grain jacketed hollow point design for expansion and penetration
• New production, non-corrosive boxer-primed ammunition
• Reloadable brass cases for long-term cost efficiency
• 1912 fps muzzle velocity and 2842 ft-lbs of energy
• Designed for hunting and self-defense applications
• Safe for use in suppressors
• 20 rounds per box; available in 10-box cases

Specifications

Frequently Asked Questions

Is this ammunition safe to use in a suppressor?

Yes. Underwood Ammo 348 XTP rounds are designed to be safe for suppressor use.

Can I reload these brass cases?

Yes. This ammunition comes in reloadable boxer-primed brass cases, so you can reload and shoot again after firing.

What is this ammunition designed for?

The Underwood Ammo 348 XTP is designed for hunting and self-defense applications with the .500 S&W Magnum handgun.

How much ammunition comes in each order?

Each box contains 20 rounds. This product is available in a 10-box case, which totals 200 rounds.