I'm in the process of building a rimfire trainer for my 260 Rem long range rifle. My LR rig is a Savage Model 12 sitting in a Manner's T-5 stock with a SWFA 5-20X scope. The rimfire trainer is looking like it will be a CZ 455 Precision Trainer in a Manner's T-4 stock. I'm checking with Manner's on whether the ergonomics between the T-5 and T-4 are similar, despite the T-5 being a thumbhole stock. Eyeballing them, it appears the comb height and grip angle are very similar. Both rifles will be principally shot prone or off of a bench. Trainer will be limited to 50 to 100 yards.

The CZ 455 has the integral 11mm dovetail on the action, so not sure if installing a rail is possible or even necessary. My objective is to keep the eye relief/cheek weld and fit/feel consistent with its centerfire counterpart.

Mounting another SWFA 5-20X is a pricey option, so looking for recommendations on what optic to choose. Thinking that so long as the reticle is the same, the training value will still be there. I have a SWFA 3-15x scope with the same mil-quad reticle that is a contender.