I just got a 457 Canadian Edition and I was wondering about this too.
So ANY 11mm rings will fit it (in the correct size for the scope of course)?
I was looking at a CZ 557 in 30-06 and they said it took some proprietary mount.
Randy
@Randy, Assuming that you want a ring that mounts on the 11mm dovetail of the 457, your choices will be: 1) 1-tube or 30mm tube, 2) size of the objective will determine ring-height, low, medium, high or extra high. Also, does your 457 have rear leaf sigh?Are you going to keep it or remove it? We’re talking clearances here.
For example, my barrel has is a heavy varmint without sights. My scope is a 30mm tube Vortex 6-24x50. I’m using a UTG PRO P. O. I. 30mm medium 11mm dovetail set part no. RDU013015. Clearance over the barrel is minimal but good. My alternative choice for rings would be BKL-300 or BKL-301.