Originally Posted by Buffalobob

10-22s are like a rotten spoiled house cat. You can only feed them what they like.

Some of them like slow speed stuff and some will like high speed stuff. I tested about 10 different brands and speeds of bullets, The results surprised me so I went back and retested again and the results were very repeatable. Even at its best mine is not a tack driver but it still insists on expensive bullets- Either Yellow Jackets or Eley. So if you are really interested in the maximum accuracy go and test bullets, Remember that they have a hard wax lube on them and you will need to pre-foul the barrel each time you change brands of bullets.