What Is .22 LR? Complete Beginner’s Guide to the Most Popular Rimfire Cartridge

22 LR at a Glance: Strengths and Tradeoffs

Before going deeper, here’s the honest version of why shooters love this cartridge — and where it runs out of road.

Why people choose 22 LR:

• Minimal recoil makes it approachable for new shooters of any age or frame
• Ammo is among the least expensive options available, centerfire or rimfire
• Platform variety is unmatched — bolt-action, semi-auto, lever-action, pistol, revolver, AR-pattern
• Suppressor-friendly by nature, especially with subsonic loads
• Legitimate for small game, pest control, competition, and skills training
• Low noise relative to centerfire — easier on ears and neighbors

Where it falls short:

• Rimfire ignition is inherently less reliable than centerfire — occasional duds are normal
• Limited effective range, typically 100–150 yards for most applications
• Not appropriate for medium or large game hunting
• Considered marginal for defensive use by most trainers and ballisticians
• Cases cannot be reloaded — the rim deforms permanently on firing

.22 Long Rifle Ballistics: The Numbers That Matter

The 22 LR isn’t a powerhouse cartridge — it was never designed to be. But understanding what it actually does on paper helps set realistic expectations and match ammunition to the task at hand.

Numbers vary by barrel length and specific load — treat these as typical ranges, not guarantees. At 100 yards, a typical 40-grain high-velocity load often drops ~4–6 inches when zeroed at 50 yards — more than most centerfire rifle rounds, which is why holdover awareness matters for hunting applications. Wind drift is also meaningful at distance; a 10 mph crosswind can push a 40-grain bullet ~3–5 inches at 100 yards. These aren’t dealbreakers — they’re the constraints the cartridge operates within, and experienced rimfire shooters account for them naturally. For a deeper look at how load selection affects real-world performance, see our guide to the best 22 LR ammo.

The 22 LR Ecosystem

Rifles are where the cartridge lives most naturally. Bolt-action, semi-automatic, lever-action, and AR-pattern 22 LR rifles each offer different handling characteristics and use cases. This is the most populated segment of the ecosystem with the widest range of price points and aftermarket support.

Pistols and revolvers bring the cartridge into a more compact format. The tradeoffs around barrel length, reliability, and terminal performance differ meaningfully from the rifle side of the house — and they’re worth understanding before you buy.

Ammunition isn’t one-size-fits-all. Standard velocity, high velocity, subsonic, and hyper-velocity loads behave differently enough that the choice matters — especially for suppressed shooting or hunting applications.

Optics extend what a 22 LR platform can do, particularly for target shooting and small game at distance. Not every setup needs glass, but knowing when it helps is part of building the right kit.

Suppressors pair exceptionally well with 22 LR — the combination is one of the quietest in common use. Understanding the legal and mechanical side of that equation is its own topic worth covering separately.

Maintenance is a real consideration. Rimfire ammo runs dirtier than most centerfire loads, and lead buildup in barrels and actions is a normal part of ownership — not a sign something is wrong.

What You Can Do With 22 LR

Plinking and recreational shooting are the most common use cases by a wide margin. The low cost per round means you can run through a brick of 500 rounds in an afternoon without it stinging. There’s no technique ceiling either — you can get genuinely good at shooting fundamentals on 22 LR and carry those skills directly into centerfire platforms.

Small game and pest hunting is where the cartridge earns its keep outdoors. Squirrels, rabbits, prairie dogs, and similar-sized animals are well within its capability at reasonable distances. Shot placement matters more here than with larger calibers — which makes you a better hunter, not a disadvantaged one. If squirrels are specifically what you’re after, we cover the platforms and loads that make it easy in our Best .22 for Squirrels guide.

Firearms training is arguably the most underrated application. Centerfire ammo costs have made it genuinely difficult to put in volume at the range. Running fundamentals — grip, trigger press, sight picture, follow-through — on a 22 LR platform at a fraction of the cost is something competitive and tactical shooters have done for decades. The skills transfer directly.

Rimfire competition has grown significantly in recent years, with formats like NRL22 and Rimfire PRS drawing serious shooters to precision 22 LR matches at distances out to 200 yards and beyond. A quality optic makes a meaningful difference at that end of the discipline — see our guide to the best 22 LR scopes if competition or precision work is where you’re headed. It’s a legitimate discipline with its own skill ceiling, not a consolation bracket.

Suppressed shooting is where 22 LR becomes genuinely exceptional. Subsonic loads through a quality rimfire suppressor produce some of the lowest report levels available in any combination at any price. For backyard pest control, hearing-safe range sessions, or just experiencing what suppressed shooting actually sounds like, nothing else in this price range competes.

Is 22 LR Good for Home Defense?

This question comes up constantly, and it deserves a straight answer. The 22 LR is a lethal cartridge — there’s no question about that. But most defensive firearms instructors and ballistics experts consider it marginal for home defense and self-defense roles for a few specific reasons. Rimfire ignition is less reliable under stress conditions. And penetration with common loads may fall short of the FBI’s minimum recommendations for reliable incapacitation. If you’re making a defensive decision, prioritize reliability, shot placement, and your ability to run the gun confidently. A 22 LR is meaningfully better than no firearm — and for shooters who genuinely cannot manage larger calibers, it’s a realistic option. But if defensive capability is a primary goal, the mainstream professional recommendation is a centerfire platform. If recoil is the limiting factor, focus on controllability first: a quality centerfire handgun you can actually manage, a simple defensive load, and consistent practice will serve you far better than stepping down in caliber.

22 LR vs. 9mm: The Comparison That Keeps Coming Up

The 9mm is the most common centerfire handgun cartridge in the world, and the comparison to 22 LR is a natural one for new shooters trying to decide where to start. The short version: they serve different purposes and aren’t really competing for the same role. The 22 LR wins on cost, volume practice, recoil management, and platform variety for recreational use. The 9mm wins decisively on terminal performance, ignition reliability, defensive application, and effective range. A lot of experienced shooters own both — 22 LR for volume training and skill development, 9mm for anything where reliability and stopping power matter.

We’re publishing a dedicated 22 LR vs. 9mm comparison guide soon with the full side-by-side breakdown.

In the meantime, if your goal is pure skill-building, start with our best 22 LR rifles guide; if your goal is optimizing what you already have, our ammo guide and scopes guide are the right next stops.

Choosing Your First 22 LR Platform

Rifle vs. pistol is the first decision, and it mostly comes down to intended use. Rifles give you a longer sight radius, better inherent accuracy, and more consistent ignition from the added barrel length. If your goal is recreational shooting, small game, training, or competition, start with a rifle. If you want something more compact for backyard pest control or you’re specifically interested in the handgun format, the pistol and revolver side of the ecosystem makes sense — just go in understanding the tradeoffs around reliability and terminal performance. Our best 22 pocket pistols guide and best 22 revolvers guide cover both sides of that decision in detail.

Action type shapes the experience considerably. Semi-automatic rifles like the Ruger 10/22 give you fast follow-up shots and the largest aftermarket support of anything in the rimfire world. Bolt-action platforms tend to be more accurate out of the box and are often the choice for target shooting and precision work. Lever-action 22s occupy a middle ground — fun to shoot, classically styled, reliable, with a slower rate of fire that suits hunting and casual range work well.

AR-pattern 22 LR rifles deserve their own mention. If your goal is to train on an AR platform without the cost of 5.56 ammunition, a purpose-built 22 LR AR is a legitimate and cost-effective path. The manual of arms transfers directly, and the round count you can run in a single range session versus centerfire is not even close. See our best 22 LR AR-15 rifles guide for the full breakdown.

For options across all action types and use cases, our guide to the best 22 LR rifles is the right next stop. And if you’re zeroed in on the Ruger 10/22 specifically — the most popular 22 LR rifle ever made — we built a dedicated Ruger 10/22 guide covering setup, upgrades, and what to buy first.

22 LR Ammo: The Basics

Not all 22 LR ammunition is interchangeable for every purpose. Standard velocity loads — typically 40-grain bullets running around 1,070–1,150 fps — are the baseline for accuracy and consistency, and what most target shooting and training applications call for. High velocity loads push past 1,200 fps and are the common choice for hunting and pest control, where a bit more energy and flatter trajectory matter. Subsonic loads stay below the speed of sound — usually under 1,050 fps — and are purpose-built for suppressed shooting, where keeping the bullet subsonic eliminates the supersonic crack entirely. Hyper-velocity loads push a lighter bullet past 1,400 fps and are optimized for maximum energy delivery at the cost of slightly more noise and barrel wear over time. Reliability varies meaningfully by brand — testing your specific firearm with several loads before committing to one in bulk is standard practice with rimfire. For the full breakdown, see our guide to the best 22 LR ammo.

Do You Need an Optic?

Iron sights are entirely adequate for casual plinking, basic small game at close range, and most training applications. Once you start pushing distance — or once you’re hunting in low light, competing in precision formats, or building a dedicated pest control setup — a quality rimfire optic changes what’s possible. The 22 LR doesn’t require expensive glass, but the parallax settings, magnification range, and reticle type that work well on rimfire differ from centerfire scopes in ways worth understanding before you buy. We cover all of it in our guide to the best 22 LR scopes. Once you’ve chosen glass, our 22 LR scope zeroing guide walks through the process start to finish.

Suppressors and 22 LR

The combination of a 22 LR firearm and a quality suppressor is one of the most hearing-safe shooting experiences available at any price point. Subsonic 22 LR through a dedicated rimfire can is genuinely quiet — not movie-quiet, but hearing-safe without additional ear protection for many shooters in open-air settings. The tradeoffs on the suppressor side involve NFA compliance, wait times, and maintenance — rimfire suppressors run considerably dirtier than centerfire cans and require regular disassembly and cleaning. They’re also among the most affordable suppressors available, which makes the entry point lower than most people expect. Our guide to the best 22 suppressors walks through the full picture, including the NFA process and what to expect on wait times.

Maintenance: What 22 LR Owners Actually Deal With

Rimfire ammo burns dirtier than most centerfire loads. Lead and carbon buildup in the barrel, chamber, and action is normal and expected — it’s a function of how rimfire priming compounds work, not a sign of bad ammo or a defective gun. The practical consequence is that 22 LR firearms need more frequent cleaning than their centerfire counterparts, and neglected guns will eventually develop reliability issues that well-maintained ones don’t. A reasonable baseline is to clean after every range session when running bulk ammo, and at a minimum every 300–500 rounds regardless of use. We cover the full process in our guide to cleaning a 22 LR rifle and walk through the tools worth owning in our best cleaning kits for 22 LR guide.

22 LR vs. Other Cartridges

The most common rimfire comparison is 22 LR against the 22 WMR (Winchester Magnum Rimfire). The Magnum offers meaningfully more energy and range at the cost of higher ammo prices and a smaller firearm selection. For shooters wanting more reach for varmint work or small predators, the Magnum makes sense. For everyone else — training, plinking, casual hunting, competition — the 22 LR wins on economy and platform variety. The centerfire comparison that comes up most often is against the .223 Remington, particularly for AR platform owners deciding whether a 22 LR trainer is worth adding to the safe. We cover that specific decision in our 22 LR vs. 223 comparison guide.

Legal and Safety Overview

The 22 LR cartridge and the firearms chambered for it are legal for civilian ownership throughout the United States under federal law, with no special licensing required for the firearm itself. Suppressors are regulated under the National Firearms Act and require a Form 4 transfer, a $200 tax stamp, and ATF approval before transfer — wait times vary but have historically run several months to over a year. State and local laws vary significantly. Some states restrict suppressor ownership entirely. Others impose additional requirements on handgun purchases, minimum purchase ages, or magazine capacity that affect 22 LR pistols and rifles. Local ordinances may impose restrictions beyond state and federal law. Nothing here constitutes legal advice — verify the rules in your jurisdiction before purchasing any firearm or NFA item. The NSSF Firearm Safety Resources page is a solid starting point for safety standards and responsible ownership guidance.

How to Use This Guide

The most useful thing this page can do is point you in the right direction. Here’s how to navigate from here based on where you are in the process.

If you’re buying your first 22 LR and haven’t decided on a platform, start with the best 22 LR rifles guide for the long gun side, or the best 22 pocket pistols guide and best 22 revolvers guide if a handgun makes more sense. The Ruger 10/22 guide is worth reading regardless — it’s the most popular 22 LR platform ever made and the default starting point for most new rimfire shooters.

If you already have a gun and want to optimize it, the ammo guide will help you match loads to your use case. The scopes guide covers what to look for in rimfire glass. And if you’re thinking about a suppressor, the suppressors guide walks through the NFA process alongside the hardware recommendations.

If you’re training on an AR platform and want to know whether a 22 LR AR makes sense for your situation, our best 22 LR AR-15 rifles guide covers that decision directly. And if you’re still deciding whether 22 LR is the right cartridge for your needs versus a centerfire option, our 22 LR vs. 223 comparison addresses the most common crossover question head-on.