From the Colt .22 Target Pistol, aka my Han Solo Blaster looking thing,...likes Winchester, Remington, and standard CCI. HP's, or not doesn't seem to matter.
However, American Eagle will not cycle. But works fine in my Ruger 10/22 rifle.
As posted, .22's are a dirty round. A swab of the barrel, and a quick wipe of the action, after 100 +/- rds. can keep your shots tighter and more consistent.
Some older .22's shoot 40 year old "whatever", without even a hiccup, however, newer pistols tend to be built to tighter tolerances, and more exacting fit...Which tends to effect things when shooting many rds.
I don't use a red dot on my Colt, but experiment and get what you expect it to do and in correlation to your own exp.
Welcome to DRTV. With the price of ammo only going in one direction, all of love our .22's....

Good shooting.