Bugger: I am glad your CZ 17 Hornet is pleasing you and that you will soon be getting after the Prairie Dogs with it!
By the way what scope (power) are you using on that CZ 17 Hornet?
And I assume those targets were shot at 100 yards?
My Ruger 77/17 Hornet has a Weaver 4x16 variable scope on it and I am well pleased with the accuracy I am getting so far with factory ammo (Hornady 20 grain V-Max).
Enjoy your nifty Rifle.
Hold into the wind
VarmintGuy