The Aguila Colibri .22LR case of 1,000 rounds is how you should buy this ammunition if you use it regularly, and for good reason. It is the same 20 grain lead solid point ultra subsonic load in brass cases, model 1B220337, packaged in case quantity rather than a single box. Dependable rimfire from Aguila, loaded to run in anything chambered for the cartridge.
Specialty ammunition has a way of disappearing from shelves at exactly the moment you need it. A thousand rounds on hand means the quiet work never waits on a restock.
What the Aguila Colibri .22LR Case Is and Who Buys It
This is the ultra subsonic, ultra quiet end of the rimfire world. The 20 grain bullet is half the weight of a standard .22 projectile and travels well below the sound barrier, producing a report many shooters compare to an air rifle.
Property owners dealing with ongoing pest problems are the natural buyers. So are indoor practice shooters running a proper trap, and anyone who needs to work quietly in a setting where a standard .22 would be unwelcome.
Instructors buy it in volume too. Nothing else lets a nervous beginner fire live ammunition with so little noise and recoil, and a case covers a lot of first lessons.
Key Features
- 1,000 rounds per case for genuine volume use
- .22 LR case dimensions, chambering in any standard rimfire
- 20 grain lead solid point bullet at ultra subsonic velocity
- Brass cases you can collect and reload if that is part of your routine
- Velocity that stays consistent lot to lot across the case
- Manufacturer model 1B220337 for easy reordering
Working Through the Specifications
The 20 grain lead solid point is the defining number. Light bullets at low velocity shed energy quickly, so effective range on Aguila Colibri .22LR is very short and trajectory falls away sharply beyond close distance.
Ultra subsonic velocity is exactly why people buy it. With no sonic crack there is nothing to hear but a soft muzzle pop, which is the entire point of the cartridge.
Brass cases extract cleanly at these very low pressures and store well over long periods, which matters when you are buying a thousand at a time. Collect them if brass salvage is part of your routine.
Case quantity changes the economics. Buying 1,000 rounds at once costs less per round than boxes and means a specialty load you depend on is always in the cabinet.
Critical Safety Notes, Care and Compatibility
Do not skip this. Ultra low powered rimfire ammunition carries a real risk of a bullet stopping inside a long barrel, and the manufacturer advises against using it in rifle length barrels. Short barreled pistols and revolvers are the correct platforms.
Any shot that sounds weaker than normal means stop, unload and inspect the bore for an obstruction before the next round. Firing into a lodged bullet ruins barrels and injures people.
Semi automatics will not cycle on this load. There is not enough energy to work an action, so treat an autoloader as a single shot and cycle by hand between rounds.
Break the case down into sealed containers, keep them cool, dry and off bare concrete, and the ammunition will last decades. Our ammunition selection covers standard velocity rounds for the same guns, and the Aguila Ammunition site has more on the line.
Set a proper backstop even at these low energies. It is still a live bullet, so every rule about knowing your target and what lies beyond it applies exactly as it does with a full power cartridge.
Buy the case, store it properly, and the quiet jobs are handled for years. Aguila Colibri .22LR bought in case quantity is the smart way to own a specialty load you actually depend on. This ammunition ships straight to your door wherever state and local law allows.







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