The Walther P22 is a fun, low-recoil .22 LR pistol, but it’s famously ammo-sensitive: as a blowback design, it needs enough pressure to fully cycle the slide, so high-velocity rounds run far more reliably than cheap, weak bulk ammo. Here’s a guide to the best ammo for the Walther P22 and what to avoid.
Best overall: CCI Mini-Mag (40gr)
CCI Mini-Mag 40gr is the go-to for the P22 and the round most owners recommend first. In fact, CCI Mini-Mag is the ammunition Walther itself uses to test the pistol. Its consistent high velocity reliably cycles the blowback action, and the 40-grain weight feeds well. If you try one box of ammo, make it this.
Reliable alternatives
- CCI Standard Velocity / High Velocity — consistent CCI quality that generally cycles the P22 well.
- Federal AutoMatch — an affordable bulk option that many P22 owners find runs reliably for plinking.
- CCI Stinger / Velocitor — hotter, higher-velocity loads that cycle easily (see the caution below).
What to look for
- High velocity: mid-to-high velocity ammo creates enough pressure to fully cycle the slide; weak bulk rounds cause failures to eject/feed.
- 40-grain bullets: a 36-40gr bullet offers the best mix of mass and velocity and feeds well in .22 semi-autos like the P22.
- Clean-burning brands: the P22’s small action fouls quickly, so quality ammo means fewer jams between cleanings.
A caution on very hot ammo
While high velocity is good, going much above ~1200 fps (e.g. the hottest hyper-velocity loads) has been linked to cracked slides on some P22s over time. CCI Mini-Mag hits the sweet spot — reliable cycling without beating up the gun. Use hyper-velocity rounds sparingly.
Bottom line
- Start with CCI Mini-Mag 40gr — the proven, factory-test choice.
- Keep ammo high-velocity and around 40gr for reliable cycling.
- Every P22 is a bit different, so test a few brands to confirm what your specific pistol likes, and keep it clean.
Note: always follow safe firearm handling rules and your local laws. This is general information, not a substitute for your firearm’s owner’s manual.