Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
The Underwood Range Supply 10mm Auto 180 grain full metal jacket delivers full-power 10mm ballistics at a price point designed for high-volume training. This is a boxer-primed, brass-cased cartridge loaded to 1250 feet per second and 625 foot-pounds of muzzle energy from a 5-inch test barrel — the same velocity envelope as many legacy FBI loads, before the bureau transitioned to reduced-pressure specifications. You get flat-nose FMJ construction, which maintains nose-forward orientation through barriers and provides predictable penetration depth on steel and paper targets. Underwood Range Supply sources top-shelf components — flash-suppressed propellant, non-corrosive primers, and twice-fired brass culled from law enforcement agencies — to deliver the consistency you expect from the Underwood name without the defensive-ammo premium.
Built for the Box
Underwood machines each 180-grain flat-nose FMJ to +0.001-inch diameter tolerance, then seats the projectile in new or once-fired brass cases that pass visual inspection and weight sorting. The flash-suppressed powder charge produces consistent chamber pressure across temperature ranges from 40 to 120 degrees Fahrenheit, and the boxer primer pocket accepts standard large-pistol primers for handloaders who plan to reload the brass. The flat-nose profile cuts cleaner holes in paper than round-nose ball, simplifying scoring in timed drills, and the non-expanding jacket makes this load safe for use in suppressors rated for full-power 10mm Auto. All ammunition ships DOT-regulated — expect additional hazmat fees at checkout.
Specs at a Glance
| Spec | Value |
|---|---|
| Caliber | 10mm Auto |
| Bullet weight | 180 grains |
| Bullet type | Full Metal Jacket (flat nose) |
| Muzzle velocity | 1250 fps (5-inch barrel) |
| Muzzle energy | 625 ft-lbs |
| Rounds per box | 50 |
| Case | Brass |
| Primer | Boxer, non-corrosive |
| Reloadable | Yes |
| Lead-free | No |
| Intended use | Range & Target |
| Country of origin | United States |
This load fits any chamber spec’d for 10mm Auto — Glock 20/40, 1911 long-slide variants, S&W 1006, SIG P220 10mm, and carbines like the Hi-Point 1095 or Kriss Vector. Browse the full Underwood 10mm Ammo catalog for expansion-oriented defensive loads and hardcast hunting offerings.
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 gun as loaded, keep your finger off the trigger until ready to fire, never point at anything you’re not willing to destroy, and know your target and what’s beyond it.
- Verify that your firearm is chambered for 10mm Auto before loading — do not attempt to fire 10mm Auto in .40 S&W chambers or vice versa.
- This ammunition contains lead; prolonged exposure to lead dust at indoor ranges requires adequate ventilation and post-session hand washing. California residents: this product is subject to Proposition 65 warnings.
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