CZ 457 Ring selection

The CZ457 has a wide variety of base heights - wider than most bolt actions. You'll have to select the base first before knowing what height rings you need.
 
I had a Bushnell 3x9x40 mounted in low rings on my 457 and there was clearance. I no longer have that combo to measure but keep in mind that "medium height" may mean different dimensions from the various manufacturers. My set up was with an econo set of rings from AMZ.ca. For other comments that may come along don't forget the 60 degree bolt through on the 457 requires lower rings than their previous models.

db
 
I didn't realize a need a base with this rifle as I don't have it in my hand yet. I thought it was dovetail like previous models.

There might be a single product that mounts a scope to the dovetail. I'm not familiar with that solution. Everyone I know with a 457 uses a pic base installed on the action, then conventional pic scope rings.
 
There might be a single product that mounts a scope to the dovetail. I'm not familiar with that solution. Everyone I know with a 457 uses a pic base installed on the action, then conventional pic scope rings.

There absolutely is such a thing, they have been around forever. Several manufacturers offer them in various heights (CZ, Burris, Leupold, etc.) lots of options. Provide a nice "clean" low
trim look on any .22 with a grooved receiver. I personally like the Burris. They are commonly referred to as ringmounts.
 
Dovetail rings are what attach a scope to dovetail grooves. CZ and most European-made rifles have had dovetail grooves for a long time. The vast majority of European made rifles such as the CZ 457 will have 11mm dovetails; North American dovetails are typically 3/8".

As Bad Bob notes, there are many from which to choose. Unless a picatinny rail is necessary for QD (quick detach) rings or for long range shooting (with a canted base), a good set of dovetail rings will work with no issues.

The OP should note that the 40mm objective usually refers to the glass size. If the scope has AO the actual diameter of the objective bell will be much larger.
 
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