These 2 chokes have the same external properties. However, the Optima Plus guns have a barrel bore of .733", and the SBE2 guns have a barrel bore of .723" . The turkey chokes are the same for both guns, and both will pattern about the same with that choke.
HOWEVER !!!! when you go to an IC or MOD choke for waterfowl hunting, and also for sporting clays should you do that also, you NEED to get the chokes made for the individual guns. There is a noticeable difference in patterning with the larger choke sizes. For example, an IC for an SBE2 will be a modified for an Optima Plus gun.
When you go to look for waterfowl or sporting clay chokes, just make sure you get those made for the actual gun you have. Turkey and buckshot are so close you will not be able to tell which is which in a blind test.
Hope this helps.
Bill davis