The Ultimate Guide to 22 LR Ammo: Ballistics, Uses, and Best Loads
The 22 LR ammo (.22 Long Rifle) cartridge is the most widely produced, purchased, and fired ammunition caliber in the world. Originally developed by the J. Stevens Arms & Tool Company in 1887, this rimfire round has served target shooters, small-game hunters, plinkers, and tactical shooters for well over a century.
Why Rimfire Remains the World’s Favorite Cartridge
The universal popularity of this round comes down to four fundamental advantages: affordability, low recoil, minimal noise, and overall versatility.
- Affordability: You can purchase bulk boxes containing 500 rounds for a fraction of the cost of centerfire cartridges like 9mm or .223 Remington.
- Low Recoil: The minimal force produced by this small cartridge makes it ideal for training young or novice shooters, helping prevent the development of a flinch.
- Low Noise Footprint: When paired with a suppressor or used in subsonic configurations, rimfire rounds are remarkably quiet, making them popular for backyard practice and pest control.
Key Load Categories and Velocity Ratings
Selecting the right round depends heavily on your firearm and shooting discipline. Rimfire loads are primarily classified by velocity and bullet profile.
| Load Category | Muzzle Velocity (FPS) | Common Bullet Weight | Best Use Cases |
| Subsonic | 1,080\{ fps} | 40\text{ gr} – 45\text{ gr} | Suppressed shooting, quiet pest control |
| Standard Velocity | 1,080 – 1,150\text{ fps} | 40\text{ gr} | Match target shooting, general range plinking |
| High Velocity | $1,200 – 1,310\text{ fps}$ | $36\text{ gr} – 40\text{ gr}$ | Semi-auto cycling, small-game hunting |
| Hyper Velocity | $> 1,400\text{ fps}$ | $30\text{ gr} – 32\text{ gr}$ | Varmint hunting, flatter trajectory at distance |
Understanding Projectile Profiles
The projectile design plays a vital role in terminal performance and mechanical reliability in 22 LR ammo.
1. Lead Round Nose (LRN)
Standard LRN features a solid lead bullet designed for clean aerodynamic travel. It is the most common profile for target matches and casual plinking.
2. Copper-Plated Hollow Point (CPHP)
CPHP features a small cavity at the nose designed to expand upon impact. The copper plating reduces lead fouling in semi-automatic barrel rifling and action components.
3. Segmented Hollow Point
Designed specifically for small-game hunting, this style splits into three distinct fragments upon entering tissue, maximizing energy transfer on small pests.
Matching Cartridges to Your Shooting Application
To get the best performance out of your setup, choose a load variant tailored to your specific goal:
- Target & Match Competition: Precision bolt-action rifles perform best with tight-tolerance, standard-velocity rounds (such as ELEY, Lapua, or SK) that avoid the accuracy-disrupting sonic transition zone.
- Semi-Automatic Handguns & Carbines: Firearms like the Ruger 10/22 or 22/45 require the higher gas pressure of High Velocity options (1,200{ fps}) to reliably cycle the slide or bolt.
- Small-Game & Varmint Hunting: For squirrels, rabbits, or groundhogs, choose high-velocity CPHP rounds to ensure ethical, single-shot humane dispatches.
Care, Maintenance, and Proper Storage
Because rimfire ignition systems rely on a priming compound spun into the inside rim of the brass case, proper storage is critical to avoid misfires or failure-to-fire (FTF) incidents. Store your bulk 22 LR ammo in air-tight cans with fresh desiccant packs in a cool, dry room to prevent moisture degradation over long periods.