I've found the Federal 525 & 550 bulk packs ok for practice but definitely not match ammo just based on percentage of misfires.
Winchester M-22 is worse, even more misfires. Remington isn't worth buying. The Winchester 555/333/222 is better, Blazer better still and CCI Tactical has become my Rimfire Challenge match ammo.
CCI Tactical seems to be a blunter nosed slightly downloaded Mini-Mag. Mini-Mags are also at the top of my list.
For Steel Challenge or Bowling Pins with my 617(s) I use Federal 719. Consistently goes bang and is the cleanest burning 22 rimfire ammo I've ever shot. Would use it more if I could get more but it's also in a different price bracket.
Norma Tac-22 also seems to be very good (but dirtier as most std velocity seems to be) but again is pricier. It's oily/greasiness seems to be a non-issue unless you don't have a couple paper towels in your range bag... But, std velocity in a rifle gets iffy as to the shot timer recording and doesn't have the gas volume for my Ruger 22/45 Lites' compensators to work.
Just my 2 cents.