Underwood Ammo152746809
Underwood Ammo 557 50Beowulf 350Gr Full Metal Jacket 20 Per Box/10 Case$34.76
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Availability: In Stock
Current Stock: Out of stock
The Underwood Ammo .458 SOCOM 350-grain full metal jacket round delivers serious stopping power for hunters and shooters running big-bore AR platforms. This is purpose-built ammunition for the .458 SOCOM cartridge—a hard-hitting intermediate rifle caliber that combines rifle velocity with handgun-class energy on target. At 1,650 feet per second and 2,116 foot-pounds of muzzle energy, this load offers proven performance for hunting applications where you need the ballistic authority to anchor game cleanly at practical distances.
Each box contains 20 rounds loaded on new production, non-corrosive boxer-primed brass cases—fully reloadable for shooters who handload. The 350-grain bullet is constructed from brass and lead, engineered as a full metal jacket projectile with a sectional density of 0.238 and a ballistic coefficient (G1) designed for stable, supersonic flight. This is genuine .458 SOCOM ammunition; verify your rifle's actual chambering before purchasing, as the cartridge is not interchangeable with other large-bore rounds.
Underwood Ammo builds this round to exacting standards and marks it as suppressor-safe, so if your .458 SOCOM rifle is equipped with a sound suppressor, you can run these loads without hesitation. The full metal jacket design and lead-core construction deliver consistent performance downrange. Whether you're breaking in a new upper, testing loads at the range, or hunting with a proven big-bore platform, this ammunition combines Underwood's reputation for quality with the raw energy of the .458 SOCOM cartridge.
| Caliber | .458 SOCOM |
| Bullet Weight | 350 grains |
| Bullet Type | Full Metal Jacket |
| Bullet Diameter | 0.458" |
| Muzzle Velocity | 1,650 fps |
| Muzzle Energy | 2,116 ft-lbs |
| Ballistic Coefficient (G1) | Published by manufacturer |
| Sectional Density | 0.238 |
| Case Type | Brass, boxer-primed, reloadable |
| Corrosive | No |
| Rounds Per Box | 20 |
| Case Quantity | 10 boxes |
| Manufacturer | Underwood Ammo |
The .458 SOCOM is chambered in AR-15 uppers and other rifles specifically built for this cartridge. Verify that your rifle is actually chambered in .458 SOCOM before purchasing—this round is not compatible with other calibers.
Yes. Underwood Ammo specifies that this 350-grain full metal jacket load is safe to use in suppressors, making it suitable for suppressed .458 SOCOM rifles.
Yes. This ammunition features new production brass cases with boxer primers, which makes them fully reloadable for handloaders.
Underwood designed this ammunition as a proven hunting round. The 350-grain full metal jacket bullet and 1,650 fps velocity provide the energy and penetration needed for hunting applications with the .458 SOCOM platform.
SKU: 152744355 • Width: 2.5in • Height: 2.3in • Depth: 3.3in • Weight: 1.675oz
Availability: In Stock
Current Stock: Out of stock
The Underwood Ammo .458 SOCOM 350-grain full metal jacket round delivers serious stopping power for hunters and shooters running big-bore AR platforms. This is purpose-built ammunition for the .458 SOCOM cartridge—a hard-hitting intermediate rifle caliber that combines rifle velocity with handgun-class energy on target. At 1,650 feet per second and 2,116 foot-pounds of muzzle energy, this load offers proven performance for hunting applications where you need the ballistic authority to anchor game cleanly at practical distances.
Each box contains 20 rounds loaded on new production, non-corrosive boxer-primed brass cases—fully reloadable for shooters who handload. The 350-grain bullet is constructed from brass and lead, engineered as a full metal jacket projectile with a sectional density of 0.238 and a ballistic coefficient (G1) designed for stable, supersonic flight. This is genuine .458 SOCOM ammunition; verify your rifle's actual chambering before purchasing, as the cartridge is not interchangeable with other large-bore rounds.
Underwood Ammo builds this round to exacting standards and marks it as suppressor-safe, so if your .458 SOCOM rifle is equipped with a sound suppressor, you can run these loads without hesitation. The full metal jacket design and lead-core construction deliver consistent performance downrange. Whether you're breaking in a new upper, testing loads at the range, or hunting with a proven big-bore platform, this ammunition combines Underwood's reputation for quality with the raw energy of the .458 SOCOM cartridge.
| Caliber | .458 SOCOM |
| Bullet Weight | 350 grains |
| Bullet Type | Full Metal Jacket |
| Bullet Diameter | 0.458" |
| Muzzle Velocity | 1,650 fps |
| Muzzle Energy | 2,116 ft-lbs |
| Ballistic Coefficient (G1) | Published by manufacturer |
| Sectional Density | 0.238 |
| Case Type | Brass, boxer-primed, reloadable |
| Corrosive | No |
| Rounds Per Box | 20 |
| Case Quantity | 10 boxes |
| Manufacturer | Underwood Ammo |
The .458 SOCOM is chambered in AR-15 uppers and other rifles specifically built for this cartridge. Verify that your rifle is actually chambered in .458 SOCOM before purchasing—this round is not compatible with other calibers.
Yes. Underwood Ammo specifies that this 350-grain full metal jacket load is safe to use in suppressors, making it suitable for suppressed .458 SOCOM rifles.
Yes. This ammunition features new production brass cases with boxer primers, which makes them fully reloadable for handloaders.
Underwood designed this ammunition as a proven hunting round. The 350-grain full metal jacket bullet and 1,650 fps velocity provide the energy and penetration needed for hunting applications with the .458 SOCOM platform.
SKU: 152744355 • Width: 2.5in • Height: 2.3in • Depth: 3.3in • Weight: 1.675oz