Underwood Ammo 557 50Beowulf 350Gr Full Metal Jacket 20 Per Box/10 Case

The Underwood Ammo .50 Beowulf 350 Grain Full Metal Jacket is purpose-built ammunition for shooters who demand penetration and power in a big-bore platform. This 50 Beowulf load pairs a 350-grain FMJ-FN (full metal jacket, flat nose) bullet with modern brass cases, delivering the kind of hard-hitting performance that serious hunters and defensive shooters expect from a cartridge designed to stop large, dangerous game. At 1,775 feet per second and 2,449 foot-pounds of muzzle energy, this round hits like a truck and keeps going through what's in front of it.

The flat-nose bullet design is the key difference here. Unlike traditional round-nose non-expanding bullets, the flat nose maintains its orientation as it penetrates, allowing the full frontal surface to work through dense material—thick hide, heavy bone, brush—without deflecting. That nose-forward stability is critical when you're counting on a round to perform under real-world conditions. Underwood uses a copper-lead construction for reliable performance, and the FMJ design ensures the bullet stays together and drives deep, which is exactly what you want in a woods-defense or hunting scenario.

This is new production ammunition, loaded into reloadable brass cases with Boxer primers, so you can reload once you've fired them. The round is non-corrosive and safe to use in suppressed rifles, giving you flexibility in how you set up your platform. Each box contains 20 rounds, and the case quantity lets you stock up on a cartridge that doesn't sit on every shelf. If you run a .50 Beowulf and you're serious about terminal ballistics, this load deserves a hard look.

Key Features

• 350-grain flat-nose full metal jacket bullet for maximum penetration
• 1,775 fps muzzle velocity, 2,449 ft-lbs muzzle energy
• New production, non-corrosive ammunition
• Reloadable brass cases with Boxer primers
• Safe for suppressed rifles
• Designed for hunting and defensive applications with large, dangerous game

Specifications

Frequently Asked Questions

What firearms does this ammo work in?

This ammunition is loaded for .50 Beowulf rifles. Always verify your rifle's chambering before loading any ammunition.

Can I use this ammo in a suppressor?

Yes. This round is rated safe for use in suppressed rifles, though you should always confirm your suppressor's specifications and manufacturer recommendations.

Is this ammo reloadable?

Yes. The cases are new brass with Boxer primers, so once fired, they can be reloaded.

What's the intended use for this load?

This ammunition is designed for hunting large game and defensive use against dangerous animals. The flat-nose, non-expanding bullet provides deep penetration for reliable performance on heavy-bodied targets.