Best .22 LR Ammo for Steel Challenge: Reliable, Clean, Fast

In Steel Challenge, a malfunction is the most expensive thing that can happen to you. The plates are big and close, so a single miss costs very little. A stovepipe on string three, though, means clearing the gun while the timer runs, and that one string can sink your stage. That's why experienced rimfire Steel Challenge shooters talk about ammo in terms of reliability first, then cleanliness, and accuracy a distant third.

This guide picks .22 LR loads with that order in mind, using manufacturer specs and published cartridge references. It's an editorial reference, not a test, so there are no invented malfunction rates here. Your own gun gets the final say.

What Steel Challenge asks of a .22

Steel Challenge is a speed game. You engage five steel plates per string as fast as you can, finishing on a designated stop plate, and your time is the score. There are eight standard stages, and rimfire competitors shoot them with semi-auto rifles and pistols in optic and iron-sight divisions. Check the current USPSA Steel Challenge rulebook for division definitions and equipment rules. Club matches may add their own range rules.

That format changes what matters in a cartridge:

• Cycling energy. Most rimfire pistols and rifles are straight blowback. Ammunition has to push the slide or bolt fully rearward every time, including when the gun is dirty late in a match.
• Feeding. Round-nose bullets slide over feed ramps and magazine lips more smoothly than flat or hollow points in many guns.
• Consistent ignition. A rimfire dud stops a string just as surely as a jam. Brands with strong reputations for consistent priming earn their price here.
• Clean burning. You may fire a few hundred rounds in one match. Less residue means the gun stays reliable longer between cleanings.
• Accuracy that's good enough. Steel Challenge plates are large, so you don't need match-grade precision. You need hits on demand at speed.

Our Steel Challenge vs NRL22 comparison explains the format in more depth, and the rimfire competition guide covers how to find a first match.

The picks

At a glance

Velocities are maker ratings from test barrels. Your rifle or pistol will differ. Browse more options in Ammunition Depot's .22 LR category.

Rifle vs pistol: does it change the pick?

Usually a little. Rimfire rifles have longer barrels and heavier bolts, and most run happily on a wide range of high-velocity bulk ammo. Pistols are pickier. Short slides, magazine springs and feed ramps all affect how a cartridge behaves. So it's common for a shooter to run bulk practice ammo through their rifle and premium round-nose in their pistol.

If you shoot both divisions in one match, keep life simple: find one load that both guns run flawlessly and buy plenty of it. Our pistol ammo guide goes deeper on what .22 pistols like.

How to choose your match ammo

1. Shortlist two or three loads from the picks above.
2. Clean the gun, then fire at least a few hundred rounds of each through it in practice, keeping count of any malfunctions and noting whether they happen when the gun is clean or dirty.
3. Use all your magazines. A problem that shows up in one magazine is a magazine problem, not an ammo problem.
4. Check lock-back on empty on every magazine. If a load doesn't reliably lock the slide or bolt back, it's short on energy for that gun.
5. Buy the winner in quantity, ideally from the same lot.

If you get duds, set them aside safely and read our misfire diagnosis guide before blaming the ammo. A dirty chamber or weak firing pin strike can look like bad ammunition.

Keep the gun clean enough to run

Even the cleanest .22 ammo builds residue in a semi-auto. Before a match, clean the chamber and the bolt face, check the extractor, and wipe out the magazines. Many shooters also run a pull-through between matches. Our rimfire cleaning kit guide covers tools. A Hoppe's .17 to .22 rimfire kit is a simple place to start.

The bottom line

For Steel Challenge, pick the load your gun runs every single time. For most people that's a high-velocity round nose: CCI Mini-Mag on match day and a bulk 40-grain round nose such as Federal AutoMatch for practice. Standard velocity is for guns that have proven they can run it. Test before you buy in bulk, keep the gun clean, and let your splits do the talking.

Editorial note: This is an independent editorial reference built from manufacturer information, retailer listings and published reporting. We have not performed hands-on testing of the products discussed, and nothing here is a performance promise. Verify specifications, compatibility and legality for your own situation.

Affiliate disclosure: Some links on this page are affiliate links to Ammunition Depot. We may earn a commission if you buy through them, at no extra cost to you. Our editorial choices aren't influenced by commissions. Check current price, stock and specifications directly with the retailer.