Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
The Underwood 44 Remington Magnum 180-grain Hornady XTP JHP delivers 1700 feet per second and 1155 foot-pounds of muzzle energy from a 7.5-inch test barrel — a hunting load engineered for controlled expansion and terminal penetration on whitetail, hogs, and black bear at handgun distances. The 44 Magnum hunting ammo category demands accuracy under recoil and consistency across ambient temperatures; Underwood pairs the proven Hornady eXtreme Terminal Performance (XTP) bullet with flash-suppressed propellant and nickel-plated brass to deliver both. If you run a Ruger Redhawk, Smith & Wesson 629, or lever gun chambered in 44 Magnum, this 180-grain JHP sits at the lighter end of the spectrum — flatter trajectory than 240-grain loads, less felt recoil, and faster follow-up shots when you need them.
Performance at a Glance
The Hornady XTP projectile uses a serrated jacket and precisely controlled expansion cavity to balance penetration depth with energy transfer. At 1700 fps, the 180-grain XTP exits the muzzle with enough velocity to maintain expansion reliability through heavy clothing and tissue, yet the sectional density of 0.1397 ensures the bullet drives deep enough for vitals on medium game. Underwood manufactures this ammunition in the United States using Boxer primers and nickel-plated brass cases — the nickel resists tarnish during storage, feeds cleanly in tubular magazines and revolver cylinders, and simplifies case prep if you reload. Flash-suppressed powder protects night vision during low-light encounters, whether you’re hunting at dawn or addressing a livestock predator after dark.
Specs at a Glance
| Spec | Value |
|---|---|
| Caliber | 44 Remington Magnum |
| Bullet weight | 180 grains |
| Bullet type | Hornady XTP Jacketed Hollow Point |
| Muzzle velocity | 1700 fps (7.5″ test barrel) |
| Muzzle energy | 1155 ft-lbs |
| Rounds per box | 20 |
| Case | Nickel-plated brass |
| Primer | Boxer, non-corrosive |
| Reloadable | Yes |
| Intended use | Hunting |
| Manufacturer | Underwood Ammo (USA) |
The ballistic coefficient (G1) of 0.138 reflects the bullet’s profile — adequate for the 50-75 yard engagements typical of revolver hunting, where energy on target matters more than long-range wind deflection. Underwood field-tests each load with firearms representative of customer inventories, ensuring function across single-action revolvers, double-action models, and lever-action carbines. You can expect this 44 Magnum hunting ammo to cycle cleanly in tubular magazines and deliver consistent point of impact across temperature swings. Review our 44 Magnum ammo inventory for additional grain weights and bullet styles.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle and shotgun ammunition, and at least 21 for handgun ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Four rules: Treat every firearm as loaded, never point at anything you do not intend to destroy, finger off trigger until ready to fire, know your target and what lies beyond. Review the NSSF firearm safety rules before range use.
- Storage: This ammunition contains lead components. Wash hands after handling. California residents: this product is subject to Prop 65 warnings for lead exposure — see www.P65Warnings.ca.gov.
- Shipping: DOT-regulated. Cannot ship via air. Ground transportation only to addresses in states permitting handgun ammunition sales. Verify local ordinances before ordering.
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