Gentlemen,
Allow me to throw out a big red warning flag here!
I do not know anything about the CCI Quiet loads, but I have had extensive experience with Remington CBs in .22 long rifle.
These shells have an absolutely minimal load in them, just slightly above a primer charge.
As a consequence, you must realize that if you shoot them through a rifle, particularly one with a long barrel, there is a chance that they won't make it out of the end of the barrel!
How do I know? I had it happen twice.
First time was with a nice Remington bolt action 513, with a 24 inch barrel. I was shooting in my back yard, at a target about 50 yards away. In the middle of the firing, I had a big kick, and back-splat of powder and metal on my cheek. (Glad I was wearing shooting glasses.) Couldn't figure out what happened. Looked at the muzzle, and saw a bullet sticking half way out of it. There was another bullet stuck 3/4 of the way down the barrel. This one had apparently struck the first bullet (which had not made it out of the barrel), and driven it to the end of the muzzle. This really shook me up. What if I had accidently fired a third round?
After that, I became religious about not shooting a second shot out of a rifle with the CBs, unless I definitely heard the prior shot "thawk" against the target. Sure enough, about a year later, new box of ammo, different rifle, there was a second failure. A round only got 90% of the way down a 20 inch barrel and was stuck there.
From that point on, I would never fire any CB in anything but a revolver. It is just too dangerous. These rounds, like all .22 rounds, are made on the super cheap. If there is even the slightest problem with the primer or powder charge, the bullet will not make it out of the barrel. Very very dangerous.
Hope this saves somebody from a bad injury, or ringed barrel.
Mannyrock