Underwood Ammo 123 Xtp 357Mag 125Gr Jacketed Hollow Point 20 Per Box/10 CaseUnderwood Ammo$22.87
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Underwood Ammo
Underwood Ammo 357 Magnum 158-grain hollow point rounds deliver the stopping power and reliability that serious handgun hunters and self-defense shooters demand. Built on nickel-plated brass cases and loaded with XTP bullets, this 357 Mag ammo combines proven ballistic performance with the reloadability that hand loaders appreciate. Each box contains 20 rounds manufactured to non-corrosive, boxer-primed specifications.
The 158-grain XTP projectile is designed to expand reliably on impact while maintaining deep penetration—qualities that make this load effective for both hunting applications and defensive use. At 1500 feet per second and 790 foot-pounds of muzzle energy, these rounds deliver supersonic velocity that remains stable in flight, backed by a ballistic coefficient of 0.206. The sectional density of 0.177 ensures the bullet's mass is well-distributed to overcome resistance and achieve consistent performance downrange.
Whether you're running a revolver for hunting, personal protection, or target work, this ammunition is engineered to perform. The nickel-plated brass is built tough for reliable feeding and extraction, and the boxer primers support reloading when you're ready to reload your own. For shooters using suppressors, these rounds are rated safe for suppressed fire, giving you flexibility in how you deploy them.
Order by the box or stock a full case—Underwood's commitment to quality and consistency means you get the same reliable performance round after round, whether you're working targets at the range or in the field.
| Caliber | .357 Magnum |
| Bullet Weight | 158 grains |
| Bullet Type | Jacketed Hollow Point (XTP) |
| Case Material | Nickel-plated brass |
| Primer Type | Boxer |
| Muzzle Velocity | 1500 feet per second |
| Muzzle Energy | 790 foot-pounds |
| Ballistic Coefficient (G1) | 0.206 |
| Sectional Density | 0.177 |
| Rounds Per Box | 20 |
| Boxes Per Case | 10 |
| Corrosive | No |
| Reloadable | Yes |
| Suppressor Safe | Yes |
Yes. Underwood rates this 357 Mag load as safe for use in suppressed firearms, giving you flexibility if you run your revolver or lever gun with a suppressor.
Yes. The nickel-plated brass cases are boxer-primed and fully reloadable, which is a significant advantage if you reload your own ammunition and want to reduce per-round costs over time.
Yes. This is a proven hunting load. The 158-grain XTP bullet is designed to expand reliably on game while delivering the 1500 fps velocity and 790 ft-lbs muzzle energy needed for effective hunting applications.
Each box contains 20 loaded rounds of 357 Magnum ammunition. You can order individual boxes or purchase a full case of 10 boxes (200 rounds total).
Underwood Ammo
Underwood Ammo 357 Magnum 158-grain hollow point rounds deliver the stopping power and reliability that serious handgun hunters and self-defense shooters demand. Built on nickel-plated brass cases and loaded with XTP bullets, this 357 Mag ammo combines proven ballistic performance with the reloadability that hand loaders appreciate. Each box contains 20 rounds manufactured to non-corrosive, boxer-primed specifications.
The 158-grain XTP projectile is designed to expand reliably on impact while maintaining deep penetration—qualities that make this load effective for both hunting applications and defensive use. At 1500 feet per second and 790 foot-pounds of muzzle energy, these rounds deliver supersonic velocity that remains stable in flight, backed by a ballistic coefficient of 0.206. The sectional density of 0.177 ensures the bullet's mass is well-distributed to overcome resistance and achieve consistent performance downrange.
Whether you're running a revolver for hunting, personal protection, or target work, this ammunition is engineered to perform. The nickel-plated brass is built tough for reliable feeding and extraction, and the boxer primers support reloading when you're ready to reload your own. For shooters using suppressors, these rounds are rated safe for suppressed fire, giving you flexibility in how you deploy them.
Order by the box or stock a full case—Underwood's commitment to quality and consistency means you get the same reliable performance round after round, whether you're working targets at the range or in the field.
| Caliber | .357 Magnum |
| Bullet Weight | 158 grains |
| Bullet Type | Jacketed Hollow Point (XTP) |
| Case Material | Nickel-plated brass |
| Primer Type | Boxer |
| Muzzle Velocity | 1500 feet per second |
| Muzzle Energy | 790 foot-pounds |
| Ballistic Coefficient (G1) | 0.206 |
| Sectional Density | 0.177 |
| Rounds Per Box | 20 |
| Boxes Per Case | 10 |
| Corrosive | No |
| Reloadable | Yes |
| Suppressor Safe | Yes |
Yes. Underwood rates this 357 Mag load as safe for use in suppressed firearms, giving you flexibility if you run your revolver or lever gun with a suppressor.
Yes. The nickel-plated brass cases are boxer-primed and fully reloadable, which is a significant advantage if you reload your own ammunition and want to reduce per-round costs over time.
Yes. This is a proven hunting load. The 158-grain XTP bullet is designed to expand reliably on game while delivering the 1500 fps velocity and 790 ft-lbs muzzle energy needed for effective hunting applications.
Each box contains 20 loaded rounds of 357 Magnum ammunition. You can order individual boxes or purchase a full case of 10 boxes (200 rounds total).