If the Federals you are using are those 550 round bulk pack stuff like Wal-Mart carries - it's crap! As others have stated the Federal Match is great but more expensive.
A few friends and I did 22 ammo tests several years ago to find the ammo that would function and shoot accurately in a variety of platforms. We probably tested 20 or so different firearms, rifles and pistols, from Hi-Standard, Remington, Ruger, Marlin, Mossberg and others.
The winner?? WINCHESTER SUPER-X HOLLOW POINTS!! It wasn't always the most accurate in EVERY gun but it was very accurate in all of them. I have shot groups with my 10-22T with Winchester that rival groups with Eley and Lapua match ammo. For some reason ONLY the hollow points worked this way. The round nose solids didn't.
Mikey