The 22 Magnum (also known as the 22 WMR) is a highly capable rimfire cartridge that consistently delivers 1 to 1.5 MOA accuracy in quality rifles. Shooters utilizing modern bolt-action platforms can realistically expect 1-inch to 1.5-inch 5-shot groups at 100 yards when firing premium ammunition. Accuracy is most heavily influenced by ammunition consistency, wind drift, and barrel quality. Because it relies on jacketed bullets and significantly higher velocities than the 22 LR, it provides a much flatter trajectory that excels in small game hunting out to 150 yards. It is fired exclusively as a supersonic cartridge, as subsonic loads would defeat the purpose of the magnum casing.
22 Magnum Accuracy
| Rifle / Barrel | Ammunition | Bullet Weight | Bullet Type | Velocity | Group Size | Distance | Source |
| CZ 457 Varmint (20 inch Bolt-Action) | CCI Maxi-Mag | 40 grain | JHP | 1,875 fps | 1.00 inch avg (5-shot) | 100 yards | Canadian Gun Nutz |
| Ruger American Rimfire (18 inch Bolt-Action) | Hornady V-MAX | 30 grain | Polymer Tip | 2,200 fps | 1.25 inch avg (5-shot) | 100 yards | Rotten Gun Reviews |
| Savage B22 Magnum (21 inch Bolt-Action) | CCI Gamepoint | 40 grain | JSP | 1,875 fps | 1.15 inch avg (5-shot) | 100 yards | General Data |
| Henry Golden Boy (20 inch Lever-Action) | Fiocchi Shooting Dynamics | 40 grain | JHP | 1,890 fps | 1.50 inch avg (5-shot) | 100 yards | The Shooter’s Log |
| CZ 452 American (22 inch Bolt-Action) | Winchester Super-X | 40 grain | JHP | 1,910 fps | 1.00 inch avg (5-shot) | 100 yards | Sporting Shooter |
Understanding 22 Magnum Accuracy
Accuracy is standardly measured in Minute of Angle (MOA). One MOA translates to approximately 1.047 inches at 100 yards. If a 22 Magnum rifle shoots 1 MOA, its bullets should form a 1-inch circle at 100 yards and a 2-inch circle at 200 yards.
When evaluating precision, the number of shots fired per group changes the results drastically. A 3-shot group demonstrates a rifle’s mechanical potential when the barrel is cold, but it lacks statistical proof of consistency. A 5-shot group introduces barrel heat and slight shooter fatigue, providing a much more realistic measurement of field performance. A 10-shot group exposes the maximum dispersion limit of the rifle and the inevitable inconsistencies found in mass-produced rimfire ammunition. Shooters testing 22 Magnum accuracy should rely on 5-shot averages to truly understand their rifle’s capability.
Manufacturer accuracy claims typically rely on cherry-picked 3-shot groups from indoor test tunnels. Independent testers fire 5-shot groups outdoors. This explains why a manufacturer might claim sub-MOA capabilities, while a reviewer testing the same rifle outdoors records a 1.25-inch average.
Typical 22 Magnum Accuracy
Expectations for the 22 Magnum vary depending on the platform, but it is generally regarded as a 1 to 1.5 MOA cartridge in modern rifles.
- Precision Bolt-Action Rifles: High-end factory rifles like the CZ 457 Varmint or Ruger American Rimfire represent the gold standard for the cartridge. When fed premium ammunition, these rifles consistently produce 1-inch 5-shot groups at 100 yards.
- Factory Lever-Action Rifles: Classic lever-actions from Henry or Winchester generally deliver 1.5 to 2.0-inch groups at 100 yards. This is more than precise enough for ethical shots on small game in the brush.
- Semi-Automatic Rifles: Standard factory semi-autos typically produce 1.5-inch groups out of the box with quality ammunition. However, the moving parts can sometimes induce vertical stringing compared to a locked bolt-action.
Best 22 Magnum Ammo For Accuracy
Ammunition quality is the single biggest deciding factor in 22 Magnum accuracy. Because rimfire cartridges cannot be handloaded by the consumer, shooters must test different factory loads to find what their specific barrel prefers.
| Ammunition | Bullet Weight | Type | Supersonic / Subsonic | Reported Group Size | Distance | Best Feature | Source |
| Hornady V-MAX | 30 grain | Polymer Tip | Supersonic | 1.25 inch avg (5-shot) | 100 yards | Explosive fragmentation | Rotten Gun Reviews |
| CCI Maxi-Mag | 40 grain | JHP | Supersonic | 1.00 inch avg (5-shot) | 100 yards | Exceptional reliability | Canadian Gun Nutz |
| CCI Gamepoint | 40 grain | JSP | Supersonic | 1.15 inch avg (5-shot) | 100 yards | Deep penetration on coyotes | General Data |
| Hornady Critical Defense | 45 grain | FTX | Supersonic | 1.50 inch avg (5-shot) | 100 yards | Reliable low velocity expansion | The Shooter’s Log |
| Winchester Super-X | 40 grain | JHP | Supersonic | 1.00 inch avg (5-shot) | 100 yards | Proven hunting performance | Sporting Shooter |
No single load will be universally the most accurate in every rifle. The 40-grain CCI Maxi-Mag is widely considered the absolute benchmark for precision and reliability. For varmint hunters, the 30-grain Hornady V-MAX provides an excellent balance of flat trajectory and terminal performance.
Supersonic vs Subsonic 22 Magnum Accuracy
The 22 Magnum is an exclusively supersonic cartridge. It relies entirely on extreme velocity to stabilize its jacketed bullets and deliver devastating hydrostatic shock upon impact.
Loading this cartridge to subsonic velocities is practically impossible for consumers since it is a rimfire round, and ammunition manufacturers do not offer subsonic variants. Lowering the velocity of a 40-grain bullet below the speed of sound would completely destroy its ballistic coefficient, limit its effective range to well under 50 yards, and turn it into an overpriced 22 Long Rifle. Shooters seeking tight groups and long-range rimfire performance must rely entirely on the factory supersonic ammunition.
Barrel Length And 22 Magnum Accuracy
The 22 Magnum uses a slow-burning powder that requires a relatively long barrel to achieve a complete powder burn and reach its maximum velocity potential.
- 16 to 18 Inches: Highly maneuverable and an excellent choice for a hunting rifle or suppressor host. The short barrel is incredibly stiff, which reduces harmonic whip and frequently produces excellent mechanical precision. These barrels generally yield roughly 1,800 to 1,900 fps with 40-grain bullets.
- 20 to 22 Inches: This is the optimal length for the 22 Magnum. A 22-inch barrel maximizes powder burn, achieving the full 2,200 fps velocity with 30-grain bullets. The added stiffness and weight of a 22-inch barrel also drastically reduce harmonic vibration, frequently yielding the tightest group sizes on paper.
Twist Rate And 22 Magnum Accuracy
Twist rate, the distance it takes for the rifling to complete one full rotation, is highly standardized for this caliber.
The industry standard and nearly universal twist rate for the 22 Magnum is a 1:16 twist.
This twist rate provides the exact gyroscopic spin required to stabilize a 30-grain, 40-grain, or 50-grain projectile traveling between 1,500 and 2,200 fps. Shooters rarely need to worry about twist rate when buying a factory 22 Magnum, as manufacturers exclusively use a 1:16 twist to ensure match-grade stability across all commercially available bullet weights.
Bullet Weight And 22 Magnum Accuracy
The 22 Magnum operates in a versatile window of bullet weights.
- 30 grain (High Velocity): These lightweight options, such as the Hornady V-MAX, offer the flattest trajectory inside 125 yards. They are pushed over 2,200 fps and are highly susceptible to wind drift, making them best suited for calm days and small varmints.
- 40 grain (Standard): The ideal weight for the cartridge. It offers the best balance of gyroscopic stability and momentum. Bullets like the CCI Maxi-Mag utilize real copper jackets to engage the rifling aggressively, consistently producing the tightest groups.
- 45 to 50 grain (Heavyweight): Designed for maximum energy retention and penetration on larger animals like coyotes. While they drop faster past 100 yards, they buck the wind better and deliver a harder hit upon impact.
Effective Accuracy Range
The 22 Magnum is a reliable 150-yard cartridge from a rifle, offering significantly more range than the standard 22 LR.
- 50 Yards: Absolute laser precision. Quality rifles will easily print half-inch groups, and bullet drop is virtually zero.
- 100 Yards: The standard zero distance. Shooters can expect 1-inch to 1.5-inch accuracy in calm conditions.
- 125 Yards: The cartridge shoots noticeably flatter than a 22 LR. A 30-grain bullet zeroed at 100 yards only drops roughly 2 inches at 125 yards, allowing the shooter to aim dead-on for most small game.
- 150 Yards: The bullet drops roughly 5 to 6 inches. Mechanical accuracy remains excellent, but wind drift becomes a massive factor. A 10 mph crosswind will push the bullet several inches off course, requiring careful wind reading for precise hits.
- 200 Yards: The extreme practical limit of the cartridge. The trajectory curve steepens dramatically, and precision shooting becomes highly challenging due to environmental variables.
Factors That Affect 22 Magnum Accuracy
Several unique variables influence the cartridge’s precision:
- Ammunition Lot Testing: Even premium ammunition varies slightly from batch to batch. Competitive shooters will buy several different lot numbers of the same brand, test them all, and then stock up on the specific lot that their barrel preferred.
- Jacketed Bullets: Unlike the 22 LR, the 22 Magnum utilizes real copper-jacketed bullets. This requires a slightly different bore dimension and cleaning regimen. Allowing heavy copper fouling to build up in the barrel will rapidly destroy accuracy.
- Wind Drift: Wind is the ultimate equalizer for all rimfire cartridges. The lightweight bullets are easily pushed off course by even 5 mph gusts. Testing for true mechanical accuracy must be done on completely calm days.
- Trigger Pull: The small caliber requires a delicate touch. A heavy, gritty factory trigger will cause the shooter to pull the crosshairs off target. An adjustable match trigger ensures the shooter maximizes the rifle’s potential.
22 Magnum Accuracy With A Suppressor
The 22 Magnum is an outstanding cartridge to suppress. While a suppressor cannot eliminate the supersonic crack of the bullet breaking the sound barrier, it drastically reduces the muzzle blast and makes the rifle much safer for unprotected ears in the field.
A high-quality rimfire suppressor will rarely degrade the rifle’s mechanical accuracy. In many cases, the added weight on the muzzle often dampens barrel harmonics and strips away turbulent gases, which can shrink group sizes. However, threading a suppressor onto the barrel will cause a Point-of-Impact (POI) shift. The bullets will remain highly accurate, but they will strike a different location on the target, requiring the shooter to re-zero their optic.
Manufacturer Data vs Independent Testing
When researching 22 Magnum accuracy, shooters must distinguish between laboratory claims and field realities.
Because it is not a dedicated match cartridge, manufacturers generally advertise 22 Magnum ammunition as hunting rounds capable of taking small game, rather than guaranteeing sub-MOA precision. Independent testers fire consumer-grade rifles off bipods in real-world weather. Consequently, independent reviewers shooting a hunting rifle in a 5 mph breeze routinely record 1.25-MOA to 1.5-MOA groups. Always base your expectations on independent, 5-shot-group field testing rather than theoretical perfection.
Best 22 Magnum Setup For Accuracy
For the shooter looking to extract the maximum practical accuracy from the 22 Magnum, the ideal configuration is:
- Rifle: A premium bolt-action utilizing a rigid chassis or wood stock, such as a CZ 457 Varmint or Ruger American Rimfire.
- Barrel: A 20- to 22-inch free-floated, heavy-contour (bull) barrel featuring the standard 1:16 twist rate.
- Optic: A high-magnification precision optic featuring an adjustable parallax down to 50 yards to ensure a crisp target image at rimfire distances.
- Ammunition: CCI Maxi-Mag 40-grain JHP for extreme reliability and precision, or the Hornady 30-grain V-MAX for flat-shooting varmint hunting.
Common Questions
How accurate is 22 Magnum?
The 22 Magnum is highly accurate. In modern rifles with premium ammunition, it reliably produces 1-inch to 1.5-inch groups at 100 yards.
What is the typical accuracy of a 22 Magnum rifle?
Standard factory hunting rifles generally yield 1.5 inches at 100 yards, while premium precision bolt-action rifles routinely shoot 1 inch or slightly better.
How many MOA is 22 Magnum?
With factory ammunition in a good rifle, it is universally considered a 1-MOA to 1.5-MOA cartridge at 100 yards.
What is the most accurate 22 Magnum ammo?
Loads utilizing 30-grain polymer-tipped or 40-grain jacketed hollow point projectiles, specifically the Hornady V-MAX and CCI Maxi-Mag, consistently provide the tightest groups.
Is 22 Magnum accurate at 100 yards?
Yes. 100 yards is the optimal zero distance, where the cartridge routinely prints tight groups in quality rifles.
Is 22 Magnum accurate at 200 yards?
Mechanically, yes, but practically, it struggles. The bullet drops significantly past 150 yards and is highly vulnerable to wind, making precise hits at 200 yards a significant challenge.
Are subsonic 22 Magnum rounds accurate?
Subsonic 22 Magnum rounds are non-existent. The cartridge relies entirely on extreme velocity to perform, and all factory ammunition is supersonic.
Are supersonic 22 Magnum rounds more accurate?
Yes. The 22 Magnum is designed exclusively as a supersonic round. The high velocity provides the flat trajectory and gyroscopic stability required for accuracy.
Does barrel length affect 22 Magnum accuracy?
No, a shorter barrel does not inherently ruin mechanical accuracy. A stiff 16-inch heavy barrel can be just as mechanically precise as a 22-inch barrel, though the longer barrel provides maximum velocity.
Does twist rate affect 22 Magnum accuracy?
Yes. A 1:16 twist is strictly required to stabilize standard 30- to 50-grain bullets, and it is universally used by rifle manufacturers.
Does a suppressor affect 22 Magnum accuracy?
A suppressor does not degrade group sizes, and frequently improves them by taming barrel harmonics, but it will shift the point of impact on the target.
What bullet weight is most accurate in 22 Magnum?
The 40-grain bullet is universally considered the most accurate for all-around shooting, as it offers the best balance of stability and wind resistance.