Last reviewed: 2026-04-19 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Winchester 22LR 40 grain round nose ammunition delivers a reliable, supersonic rimfire load at 1255 feet per second, producing 140 foot-pounds of muzzle energy. The 22 Long Rifle cartridge remains the most widely chambered rimfire round in North America, and this load bridges the gap between budget-grade practice fodder and premium match ammunition. The round nose profile feeds smoothly through semi-automatic actions, while the lubricated bullet coating reduces barrel fouling during extended range sessions.
Performance at a Glance
Winchester manufactures this load in the United States using non-corrosive priming and supersonic propellant. The 40-grain projectile sits at the middle weight for 22LR — lighter than subsonic 42- and 45-grain loads, heavier than the 36-grain high-velocity offerings. Supersonic velocity means you’ll hear the familiar crack downrange, which some shooters prefer for immediate auditory feedback during plinking or steel-challenge drills.
| Spec | Value |
|---|---|
| Caliber | 22 Long Rifle |
| Bullet weight | 40 grains |
| Bullet type | Round Nose |
| Muzzle velocity | 1255 fps |
| Muzzle energy | 140 ft-lbs |
| Rounds/box | 50 |
| Primer | Non-corrosive |
| Velocity rating | Supersonic |
| Lead Free | No |
| Intended use | Range & Target |
| Manufacturer | Winchester |
Sold in 50-round boxes, this load works equally well in bolt-action trainers, lever-action rifles, and semi-automatic pistols. The lubricated bullet reduces copper and lead buildup in the bore, extending the interval between deep cleanings when you’re burning through multiple boxes in a single range trip. For more Winchester 22LR Ammo options, compare this load against subsonic and high-velocity variants to match your firearm’s twist rate and intended use.
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.
- Observe the four universal rules of firearm safety at all times.
- Verify current state and local ammunition regulations — some jurisdictions restrict online sales or impose waiting periods.
- This ammunition contains lead. California Proposition 65 requires notice: handling and firing lead-based ammunition exposes you to lead, a chemical known to the State of California to cause birth defects and reproductive harm. Wash hands after handling and consider lead-removing wipes when firing indoors.
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