I use a Leupold Vari-X 3, 4.5x14 A/O set in Warne Quick Detach Medium rings ontop of a picatinny rail I installed on the .17 Remington. Other times I use my Home-Made night vision outfit with a bullet camera attached behind the ocular of a Bushnell 4x16 scope.
I love the CZ527 .17 Remington for coyotes shooting Hornady 25 gr. HP's at 3921 fps. Generally drops them on the spot and so far there have been no exits.