Underwood Ammo combines the trademark power and precision with Lehigh Defense masterfully designed Xtreme Penetrator bullets the result is one jaw dropping round. This round is solid copper and features a unique nose that maximizes penetration and facilitates consistent and reliable magazine feeding.
| FireArm | No |
| HazAir | Yes |
| Muzzle Velocity | 1500 fps |
| Application | Medium-Large Game |
| Caliber | 10mm Auto |
| Bullet Type | Solid Monolithic |
| Boxes Per Case | 10 |
| Rating | Supersonic |
| Rounds Per Box | 20 |
| Muzzle Energy | 700 ft lbs |
| Casing Material | Nickel-Plated Brass |
| Bullet Weight | 140 gr |
