Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
The Winchester Super X WinClean 40 S&W delivers 165 grains of enclosed-base full metal jacket engineering at 1130 feet per second. Built for indoor range sessions where ventilation matters, this load uses a patented brass-enclosed base bullet and lead-free primer to cut airborne lead exposure at the firing point. Each round produces 468 foot-pounds of muzzle energy, pushing a jacketed projectile that keeps your barrel cleaner and your casings ready for the reloading bench. Winchester boxes these in 50-round quantities — enough for a mid-length training block without the residue buildup you see in standard range loads.
Performance at a Glance
The WinClean system wraps the bullet base in brass, sealing the lead core from combustion gases that vaporize heavy metals during ignition. You get the ballistic profile of a 165-grain FMJ — flat enough for 15-yard drills, consistent enough for qualification strings — without the lead fog. Boxer primers seat into reloadable brass cases that eject clean and resize without extra tumbling. Non-corrosive powder keeps your chamber walls smooth through 500-round days, and the 1130 fps velocity lands close enough to duty loads that your sight picture stays honest.
| Spec | Value |
|---|---|
| Caliber | 40 S&W |
| Bullet weight | 165 grains |
| Bullet type | Full Metal Jacket (brass-enclosed base) |
| Muzzle velocity | 1130 fps |
| Muzzle energy | 468 ft-lbs |
| Rounds/box | 50 |
| Case | Brass |
| Primer | Boxer (lead-free) |
| Corrosive | No |
| Reloadable | Yes |
| Intended use | Range & Target |
| Manufacturer | Winchester (USA) |
This load sits in the 40 cal ammo category alongside duty and defensive options, but the WinClean design optimizes for volume practice where lead exposure matters more than terminal performance.
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.
- Follow the four rules of firearms safety during all live-fire drills
- Verify current state and local ammunition laws in your jurisdiction before purchase
- While this load uses lead-free primers, the bullet core contains lead — wash hands after range sessions and store in sealed containers
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