Hey Steve,
Versa Max Tactical is stamped for 3". However it is the same as the other Versa Max's with the 3.5" stamp and it will definitely take 3.5" shells. Believe I read that Remington decided to change the stamp on the tactical to 3" because of some sort of concern about longer loading tube of the tactical might cause folding issues or some such with to many 3.5" shells in the tube. Gun will however handle 3.5" shells fine.
Problem of course for us Canadian 3 Gunners with the 3" stamp on the Tactical is it translates in to fewer 2.75" shells that we can legally load in it. With the extended tube among other mods Casey at Tac Ord has done on mine I can load 9 2.75" shells in my versa max tactical. Can't recall however if this is before or after my ghost load. Will check and get back to you.
If however you're shooting one of your Madoc 3 Gun matches Steve you don't allow us to load to capacity anyway

Does this mean if you get a versa max from Casey the load restrictions will be lifted at your matches

If so I highly encourage you to go for it
What are you currently running and what's the load capacity on it?