Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Indoor range restrictions and California Prop 65 compliance drive demand for ammunition that eliminates lead at every stage—primer, core, and residue. The Winchester Super Clean NT 40 S&W delivers that solution with a 120-grain full metal jacket built around a zinc core and ignited by a lead-free primer. At 1,250 feet per second from a four-inch test barrel, this load generates 416 foot-pounds of energy and cycles reliably in duty and competition pistols chambered in 40 S&W. You receive 500 rounds in ten 50-round boxes, each case made from reloadable brass with a non-corrosive Boxer primer.
Built for the Box
Winchester engineers the Super Clean projectile with a full copper jacket surrounding a zinc core, replacing the traditional lead element entirely. The 120-grain bullet weight sits at the lighter end of the 40 S&W spectrum, reducing felt recoil compared to 165- or 180-grain defensive loads while maintaining velocity sufficient for accurate trajectory prediction at indoor distances. Muzzle velocity of 1,250 fps translates to flatter point-of-aim consistency at seven, fifteen, and twenty-five yards—the standard indoor range distances where you verify zero and practice draw-to-first-shot drills.
Specs at a Glance
| Spec | Value |
|---|---|
| Caliber | 40 S&W |
| Bullet weight | 120 grains |
| Bullet type | Full Metal Jacket (zinc core) |
| Muzzle velocity | 1,250 fps |
| Muzzle energy | 416 ft-lbs |
| Rounds per box | 500 (10 boxes of 50) |
| Case | Brass |
| Primer | Boxer, lead-free |
| Corrosive | No |
| Reloadable | Yes |
| Lead free | Yes (bullet and primer) |
| Test barrel length | 4 inches |
| Intended use | Range & Target |
| Manufacturer | Winchester |
Brass cases accept standard large pistol primers during reloading, and the Boxer pocket design simplifies decapping. If you train in jurisdictions with lead-based ammunition bans or prefer to minimize airborne particulate exposure during high-volume practice, this load meets compliance requirements without sacrificing function. Tatted Tacticals stocks 40 cal ammo in bulk configurations to support monthly training schedules and department qualifications.
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.
- Treat every firearm as if it is loaded. Keep your finger off the trigger until your sights are on target and you have made the decision to fire. Never point the muzzle at anything you are not willing to destroy. Be certain of your target and what lies beyond it.
- Winchester Super Clean NT eliminates lead from the projectile core and primer compound. While airborne lead exposure is reduced, standard eye and hearing protection remain mandatory on all firing lines.
- Verify that your pistol is rated for +P or standard-pressure 40 S&W loads. This 120-grain load operates within SAAMI pressure specifications and functions in all factory 40 S&W chambers.
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