Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
The Aguila Super Colibri 22LR cartridge moves a 20-grain round nose projectile at 590 feet per second, generating 16 foot-pounds of energy at the muzzle. Designed for bolt-action rifles and revolvers, this subsonic load eliminates the sonic crack inherent in standard-velocity rimfire ammunition, making it a practical choice for backyard plinking, pest control within legal limits, and training scenarios where sound mitigation is required. The Super Colibri sits between the standard Colibri and full-power 22LR loads, offering more downrange authority than primer-only rounds while remaining substantially quieter than high-velocity alternatives. Aguila manufactures this cartridge in Mexico under ISO 9001 certification, maintaining lot-to-lot consistency across primer ignition and projectile seating depth.
Load Profile
At 590 fps, the Super Colibri remains subsonic under all ambient temperature conditions, preventing the transonic turbulence that causes the signature crack of supersonic projectiles. The 20-grain round nose profile stabilizes in 1:16″ and 1:15″ twist barrels common to 22LR platforms, though slower twist rates may exhibit marginal accuracy loss beyond 25 yards. Muzzle energy of 16 ft-lbs places this load between CO₂-powered airguns and standard 22 Short ammunition, effective on small game within 15 yards and suitable for precision shot placement on pests where over-penetration is a liability. The lead projectile does not fragment on soft tissue, maintaining bullet weight for predictable terminal performance. Aguila packages this ammunition in 50-round boxes; note that while labeled as Long Rifle, the overall cartridge length measures slightly shorter than a 22 Long — verify chamber compatibility in semi-automatic firearms before use, as the reduced powder charge and cartridge length may not generate sufficient energy to cycle blowback actions reliably. This load is intended for manual-action firearms: bolt rifles, lever guns, pump-actions, and revolvers. Shop the full Aguila 22LR Ammo lineup for higher-velocity training and match-grade alternatives.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 22 Long Rifle |
| Bullet weight | 20 Grains |
| Bullet type | Round Nose |
| Muzzle velocity | 590 Feet Per Second |
| Muzzle energy | 16 Foot Pounds |
| Rounds/box | 50 Round |
| Corrosive | No |
| Intended use | Range & Target |
| Manufacturer | Aguila |
This subsonic load reduces noise signature by approximately 20-25 decibels compared to standard-velocity 22LR, though hearing protection remains mandatory under OSHA and range safety protocols.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle and shotgun ammunition, and at least 21 for handgun ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Observe the four universal firearms safety rules: treat every firearm as loaded, never point at anything you are not willing to destroy, keep your finger off the trigger until sights are on target, and be certain of your target and what lies beyond it.
- Verify that your firearm is rated for 22 Long Rifle cartridges and that the action type is compatible with subsonic loads — semi-automatic firearms may fail to cycle due to insufficient recoil energy.
- This ammunition contains lead. Wash hands after handling, avoid inhalation of combustion residue, and review California Proposition 65 warnings regarding lead exposure and reproductive harm at www.P65Warnings.ca.gov.
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