It has very little to do with the rifle its more to do with the bullet, you quote you can shoot a rabbit at 250 yards no problem, with a .22 rimfire Im sorry but you are either a very experienced shooter who can compensate for the massive bullet drop at 250 yards or alternatively its complete BS...I suspect its the latter if you think its down to the rifle, and that the Ruger cant make this kind of shot but the CZ can attitude (P.S I have both a CZ and a 10/22).
What ever your thoughts attempting to shoot a rabbit at 250 yards with a .22 rimfire is irresponsible IMO.
yh what ever im