I have a Leupold 4X rimfire special on my CZ and am very pleased with it. It was about $200.
The Leupold rimfire scope is also availble in 2X7 power if you need more than 4X
The parallax is set at 50 yards and is ideal for most 22LR shooting.
Also have a cupple of 3.5 x 10 AO Leupolds on rimfires, but they are more than your buget. The parallax is adjustable down to 20 yards on these, for close up shots.
Virgil B.
