Well....CCI Quiet .22LR won’t cycle the action on my Ruger MK III. Every brand of standard .22LR will cycle it just fine.
I also have a Ruger MkIII but only use CCI’s Minimag in it. I was using the regular Remington .22 and it was problematic.
“I was told to use nothing but CCI’s in my .22 pistols and rifles since the regular ones don’t have enough power to really throw the bolt back...” [SkyDancer, post 38]
“...CCI Quiet .22LR won’t cycle the action on my Ruger MK III. Every brand of standard .22LR will cycle it just fine.” [gundog, post 44]
“Aguila is best 22 cal ammo you can get anywhere, bar none...” [Beagle8U, post 59]
“...’most serious shooters’ don’t claim ‘Brand A is the most accurate ammo on the planet!’...” [Who is John Galt?, post 75]
There is no “one best” make, nor load, of ammunition. All firearms are different: more true of rimfires, and rimfire ammunition. Two identical guns, one serial number digit apart and right next to each other on the assembly line, can exhibit radically different performance in accuracy, reliability, and cleanliness - firing ammunition from the same box.
True in part because 22 rimfire rifles and rimfire ammunition don’t enjoy the profit margin of centerfire, so quality control is unavoidably less exacting. Premium match ammunition from makers like Eley and Norma typically exhibit better precision in target guns or other higher-end arms, but there is still detectable variation. Inexpensive ammunition fired from an old budget-priced rifle sometimes delivers smaller groups than the highest-priced match ammunition fired from a premium-grade target rifle.
Not all 22 rimfire ammunition is loaded equally.
From the introduction of smokeless powder until the 1930s, the common 22 rimfire rounds (Short, Long, Long Rifle) were loaded pretty much to a single velocity for each. Then ammunition manufacturers introduced what they call “high velocity” loadings, about 100 to 150 ft/sec faster in muzzle velocity. Previous loadings were still made, but got renamed “standard velocity.”
The “hi speed stuff” is now the most common type available - not nearly as speedy as the hypervelocity rounds, frequently not even labeled as “high velocity.” Most semi-auto arms are built to function with it: often bolts of different mass and springs of different strength are required, compared to standard velocity.
Semi-auto pistols are by far the most problematic - their barrels are so short that the chamber pressure can drop before the bolt has received enough of an impulse to push it all the way to the rear.
Loads recently introduced have been developed for use on varmints. They are intended to be fired from manually operated rifles, sometimes sound-suppressed. Not that they always need suppression: the CCI Quiet-22 Segmented Hollow Point 22LR I purchased last year was labeled as developing 710 ft/sec. I fired some from my 1953-vintage Winchester 52C target rifle; the report was no louder than a neighbor’s 177 cal air gun.