I only shoot against myself but..
I've read and believe every Rimfire Rifle has its own preference of Ammo.
You need to try different types until you hit on the one that works best in that gun.
Here is a list of Brands, with Group Sizes, that was compiled and posted on another forum.
.22 Ammo Test
My 10/22 likes CCI Green Tag
but in my CZ 452 Style, they are all over the place.
Just finshed 500 Rds of Wolf MT
in the CZ and though they are Good, I still think it should be better.
I've had the CZ right at a month now. Tomorrow, I'm starting on my 3rd Brand of ammo, Aqila Golden Eagle Match Rifle
I have two Shoe-boxes full of different ammo that I'll be trying.
I have an order for two more, Eley Match
(Black Box) and Lapua Center-X
, in route.
Also, I've been scanning and saving the Targets shot, so I can review them later.
Just keep shooting.
It took me a year and Thousands
of rounds to find what didn't work in the 10/22.