Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
The Hornady American Gunner 40 S&W combines proven terminal performance with consistent accuracy. Built around the 180-grain XTP jacketed hollow point, this load exits a 4-inch test barrel at 950 fps with 361 ft-lbs of muzzle energy. Hornady matches propellants to each caliber and bullet weight, ensuring pressure curves and velocities remain stable lot to lot. Brass cases accept boxer primers and reload cleanly — headstamp integrity holds through multiple firings. Designed for self-defense, law enforcement duty carry, and competitive shooting where hollow-point expansion matters, the XTP projectile opens reliably across common barrier materials while maintaining weight retention.
Built for the Box
Hornady manufactures the American Gunner line in Grand Island, Nebraska, subjecting each production run to ballistic gel testing and chronograph verification. The XTP bullet features a serrated jacket that controls expansion without fragmenting — six petals deploy when the projectile contacts soft tissue, while the thick base resists separation. Case mouths receive a taper crimp that prevents bullet setback during magazine cycling. Primers are seated to SAAMI-spec depths, eliminating slam-fire risk in drop-safe striker-fired pistols. Non-corrosive formulation allows extended storage in humid environments without powder degradation.
Specs at a Glance
| Spec | Value |
|---|---|
| Caliber | 40 S&W |
| Bullet weight | 180 grains |
| Bullet type | Hornady XTP jacketed hollow point |
| Muzzle velocity | 950 fps (4-inch barrel) |
| Muzzle energy | 361 ft-lbs |
| Rounds per box | 20 |
| Case | Brass |
| Primer | Boxer, non-corrosive |
| Reloadable | Yes |
| Intended use | Self-defense |
| Manufacturer | Hornady (USA) |
This load feeds reliably in Glock 22/23, Smith & Wesson M&P40, SIG P229, and other 40 cal ammo platforms. Expect sub-2-inch groups at 25 yards from a rest when shooter fundamentals are applied consistently.
Safe Handling & Compliance
Federal law requires purchasers to be at least 21 years old 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.
- Observe the four universal rules of firearm safety: treat every firearm as if loaded, never point the muzzle at anything you are not willing to destroy, keep your finger off the trigger until ready to fire, and know your target and what lies beyond it.
- Verify current state and local laws governing possession and use of hollow-point ammunition — some jurisdictions restrict or prohibit defensive handgun loads.
- This product contains lead, a chemical known to the State of California to cause cancer and reproductive harm. Wash hands after handling and avoid exposure to firing residue in poorly ventilated indoor ranges.
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