Underwood Ammo offers this .50 Beowulf 350gr full metal jacket flat nose load (Underwood part no. 557) in a 20-round box. Underwood labels the cartridge 12.7×42 and says it is designed for use in .50 Beowulf firearms. The non-expanding bullet is built for penetration, with a flat nose that holds its nose-forward position through dense mass. Underwood rates it at 1775 fps and 2449 ft-lbs and lists it for medium and large game.

Key Specifications

• The cartridge designation is .50 Beowulf (12.7×42), the designation Underwood uses for this load.
• Bullet weight is 350 grains, the weight Underwood loads in this full metal jacket flat nose.
• The bullet is a full metal jacket flat nose, a non-expanding design that keeps its nose-forward position through dense mass.
• Underwood rates muzzle velocity at 1775 fps, a supersonic figure that tells you what to expect at the muzzle.
• Muzzle energy is listed at 2449 ft-lbs, the figure to compare against other loads in this cartridge.
• Each box contains 20 loaded rounds, which is the quantity you receive with this listing.
• Sectional density is 0.20, the ratio of the bullet’s mass to its cross-sectional area.
• The case is brass, a reloadable case.
• Underwood states the load is safe to use in a suppressor, a point that matters to suppressor owners.
• The load uses flash-suppressed powder, which keeps your vision from being compromised in low light.

Frequently Asked Questions

What firearms is this 12.7×42 load made for? Underwood states that it designed the products on this page to be compatible with Alexander Arms’ .50 Beowulf and .50 BEO products, and that it has no affiliation with Alexander Arms and Alexander Arms has not independently verified those claims.

Does the full metal jacket bullet expand? No. Underwood describes the full metal jacket flat nose as non-expanding and powerfully penetrative.

Is it safe to use in a suppressor? Underwood states that this ammunition is safe to use in a suppressor.

Buy the Underwood .50 Beowulf 350gr Full Metal Jacket Flat Nose, 20-Round Box

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