My interest in a SS-3 (1.5 to 4x), is that every other scope/mount/tune kit I've tried with my .177 FWB124d is what I can "temperature inconsistent". That is, in the cool morning hours, I sight in and poi is right on. Then about late morning, the day getting hot, now at 40 yards, p.o.impact is about 2" low. Logically the issue is either the breakbarrel lockup or the scope is temperature sensitive.
It has been an issue for years. My fixed barrel springers, TX200 and HW97k scopes/mounts are not temperature sensitive.
Neither are is my Beeman R9, Beeman R7, HW55's.
My .22 HW80k and .25 Beeman Kodiak....same poi temperature shifting problems...so I can't say what the issue is.
Eyes too old for iron sights.
When I ground squirrel/farm/ranch pest hunt, I normally use a scope at 12x.
But if I found a Beeman SS-3, at reasonable price, I'd try that to see if the poi would not shift as the day warms.
Odd that my .177 HW95/Beeman R9 is poi stable with a standard 4-12x 40mm scope but the .22 HW80k is not.
With the .22 HW80k, I've tried several different scope mounts, several different scopes, several different tune kits of different powers.
.....still, the Weihrauch HW80k....zero'ed in the cool early morning....2" low at 40 yards by about 11am as the day heated up.
RinC