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Was a company called "Lynx" .. Australian I think --- and also "Tasco" marked rings that appeared to be the same rings as the Lynx but differently branded... both made steel bases and rings to fit the 600 series of dovetails.
The best rings have an arrangement where the rear ring/base also engages the provided notch on the left side of the receiver bridge to secure the scope against recoil.
I do not know if Warne has this arrangement or not. As the dovetails are parallel the bases need something to keep them from sliding under recoil
(edited to add ... looking at the Warne catalogue the ZKK602 is not listed ... the CZ 550 is which is similar ... but I see no evidence of a "stud' or other provision to prevent movement on the parallel dovetails of a ZKK 602 - a model "usually" chambered in heavy calibers ......)
Yes .. that's just the ticket for a ZKK 602! The original arrangement sold by Pragotrade (where I also purchased the Lynx rings) years ago was a one piece base (different lengths for the different ZKK actions) which had two thumbscrews - front and rear to pull the base tight on the rifle's dovetails. The rear thumbscrew drew in a lug like the one pictured above ....the scopes where typically 4x Zeiss (Jena) ...East German or DDR manufacture. The scopes were of the "rail" type and had a large screw socket at the ocular end and a rail at the objective end...the base employed a large threaded screw to engage the rear of the scope tube and had 4 opposing grub screws that engaged the scopes front rail.... as the scope only had internal adjustment for elevation (using a top mounted turret) ... windage adjustment was external and accomplished by judicious movement of the opposing grub screws. there was also a small stud protruding from the bottom of the one piece base to locate it correctly on the receiver if the optics were removed ... actually worked well and glass was very nice although not gas purged etc... I never have experienced a problem with fogging with these scopes fwiw.