Best Ammo for the Ruger 10/22: .22 LR Tested and Ranked

The Ruger 10/22 is the most popular rifle in America with over 7 million sold — and it's pickier about ammo than most people expect. Unlike centerfire rifles that'll run just about anything in the correct caliber, .22 LR semi-auto rifles can be dramatically affected by ammo choice. The difference between CCI Mini-Mags and bulk Remington Thunderbolt in the same 10/22 can be the difference between zero malfunctions and a jam every other magazine.

This guide ranks the best .22 LR ammunition specifically for the Ruger 10/22 platform, based on the three things that matter: reliability (will it cycle the action), accuracy (will it group), and cost (can you afford to shoot a lot of it).

Why the 10/22 Is Picky About Ammo

The 10/22 uses a semi-automatic blowback action. The bolt isn't locked to the barrel — it's held closed only by spring tension and bolt mass. When a round fires, the expanding gases push the case backward against the bolt face, cycling the action. This means the ammo has to produce enough pressure to reliably cycle the bolt, but not so much that it batters the action.

.22 LR ammunition has notoriously inconsistent quality across brands. The rimfire priming compound, the wax lubricant, the bullet coating, and the powder charge all vary. Cheap bulk ammo from some manufacturers has velocity spreads of 100+ fps — meaning some rounds barely push the bolt back while others slam it rearward. The result: failure to feed, failure to eject, and failure to fire at higher rates than centerfire ammo.

The good news: the 10/22 is one of the more forgiving .22 semi-autos. It runs reliably on a wider range of ammo than many competitors. But choosing good ammo still makes a noticeable difference, especially in accuracy.

Best Overall: CCI Mini-Mag 36gr CPHP

CCI Mini-Mag is the answer the entire 10/22 community agrees on. Ask on any Ruger forum, any Reddit thread, or any gun shop counter — Mini-Mags are the gold standard for semi-auto .22 LR reliability. The copper-plated hollow point version offers consistent velocities (advertised at 1,260 fps), clean burning powder that reduces fouling, and accuracy that's impressive for a non-match load. The 10/22 was practically designed around ammo like this.

The only downside is price — at approximately $0.09/round, it's roughly double the cost of the cheapest bulk options. For most 10/22 shooters, the reliability and accuracy are worth the premium.

Best Bulk/Budget: Federal AutoMatch 40gr

Federal designed AutoMatch specifically for semi-automatic rimfire rifles — it's right in the name. The 40-grain lead round nose bullet at 1,200 fps provides enough energy to cycle the 10/22's bolt reliably while remaining affordable enough for high-volume plinking. It's noticeably more consistent than the cheapest bulk ammo from Remington or Winchester, with fewer duds and more uniform velocities.

AutoMatch is the sweet spot for 10/22 owners who want to shoot a lot without wincing at the cost. It's not as accurate as CCI Mini-Mags or CCI Standard Velocity, but for plinking, informal target shooting, and introducing new shooters to the platform, it's excellent.

Best for Accuracy: CCI Standard Velocity 40gr

CCI Standard Velocity runs at 1,070 fps — subsonic, which eliminates the accuracy-disrupting transonic wobble that occurs when a bullet decelerates through the speed of sound (~1,125 fps). This makes it one of the most inherently accurate .22 LR loads available at a reasonable price.

The trade-off: at subsonic velocity, it produces slightly less recoil energy to cycle the action. The vast majority of stock 10/22s run CCI Standard Velocity without issue, but some rifles with heavier aftermarket bolt handles or stiffer recoil springs may experience occasional short-cycling. If your stock 10/22 runs Mini-Mags, it'll almost certainly run CCI Standard Velocity too.

More Solid Options

Ammo to Avoid in the 10/22

Remington Thunderbolt: The most complained-about .22 LR in existence. Inconsistent velocities, waxy residue that gums up your action, and a higher failure rate than any other major brand. Some lots are fine; others are miserable. It's not worth the risk when Federal AutoMatch costs the same or less.

Remington Golden Bullet (bulk bucket): Similar issues to Thunderbolt. The individual-box Golden Bullet is somewhat better, but the bucket-pack bulk version has a poor reputation for consistency. Lots of duds and velocity variation.

Any subsonic ammo in a modified 10/22: If you've installed an aftermarket bolt handle, heavy buffer, or stiffer recoil spring, subsonic ammo (below 1,100 fps) may not cycle your action reliably. Test before buying in bulk.

How Much to Buy

.22 LR is one of the cheapest calibers to shoot, and the Ruger 10/22 is a gun that makes you want to shoot a lot. At current prices (~$0.05-0.09/round), a 500-round brick costs $25–45. A case of 5,000 rounds runs $250–450 depending on brand.

Our recommendation: Start with one 325-round box of Federal AutoMatch and one 100-round box of CCI Mini-Mags. Run both through your 10/22 and see which your particular rifle prefers. Then buy your winner in bulk — 10/22 shooters typically go through 500–1,000 rounds per range trip, so case quantities make sense.

Check our .22 LR deals page for the best current prices across all brands.