Otto,
Good show!I wouldn't be too surprised if the "regulation"changes after you remove the scope.Doubles often shoot differently with and without scope.On the other hand it may be better w/o since it never had a scope. I'm from the old school and also used 4198 in this class cartridge. Recently, I've been having good luck with 5744 and Trail Boss( there are some velocity issues with Trail Boss- don't compress much).
Drive on.
Mike