Hi guys,
When you say .22 ... is it .22lr ou .22mag ??
In my case, i own a Savage Mark2 TR in 22lr.
The worst ammo i fired with that gun :

1- Rem Thunderbolt : ugly groupings and gummy barrel
2- Rem Target : bad grouping and it smell like junk
3- American Eagle : poor acuracy and missfires, ammo defects...
The best :

1- CCI Std Vel : VG accuracy and clean barrel + cheap 6$/100
2- CCI Green Tag : VVG accuracy (lil'better than CCI Std) but 16$/100
3- Fed 525 value pack : think its the best bang form the buck + they sale them everywhere
But this is for my gun. Maybe with another gun that will be another story.
Like you see mine like CCI's but i have to make more testing with others ammos. I want to try some Eley Club and Eley Target. My Tr really like 40 grains bullets with Std velocity...