I cant get these buttons right. No need to apologize. Ex. My goal is to be able to take scope off of Creed and put Pulsar on, which I know has more than one zero, and be able to return to Creed and it retain zero.
I reckon asking for zero to be same going from Creed to 25-06 would be hard because of ballistics?
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If I understand you correctly here that would be no problem to take a scope off the rifle and put another scope on the rifle than latter switch back to the first scope. A lot of people do that and on hunts where a second rifle is not a consideration due to weight hunters will often have a spare scope already sighted and ready to rock. That has been going on since before QD rings were available. It works with the standard screw on rings which the QDs are just with a tool less on off feature.
You can use the same scope for different guns and calibers like your 25-06 and 6.5 Creed but make dang sure it is one that tracks true and consistent every time. FiremanJG has written about doing this before and described his method in the past of this forum. I have done the same thing between a 7mm-08 and 308. Just record the difference adjustments made to go from one rifle to another and repeat that adjustment or back out that adjustment when switching between the rifles. Then a couple shots will verify the setting of zero.
The higher quality rings and bases will work better for this but there are more than a few that work well.