On a 22lr you should be fine with the glass you have.

ARe you shooting at someting very little?

Not trying to talk you out of buying any thing.I beleave it is best to go lower power on close range on varmint hunting.I would say that there is something roung with your scope.I use a srate 4 power on my 223/12 for calling and a 3x9 on mt 223 bolt for long range All though out at 400 yards I could use a better scope.

I would check in to more scopes to see if there is a prob with yours.