I would not worry that much about altering the chokes on a Sterlingworth and to some extent this gun is in that class. A not so rare gun, that has very little cult collectors following.
In terms of numbers produced, this gun is MUCH rarer than a Sterlingworth. The market for Sterlingworths is surely a lot stronger, though. FWIW, I didn't think twice about having the chokes opened on my Sterlingworth (with reblued barrels).
But I still have some of those post spreader wads to try if you want.
Wow. Thanks for reminding me. I got your IM and I should have responded but I got distracted. I appreciate your kind offer. Right or wrong, I don't really like the spreader shell idea much. First, I don't reload 12 gauge because I see so little economic reason to do so (I do reload 28 gauge and intend to start reloading 2.5" 12 gauge shells). Also, I'm basically lazy and I prefer to simply dump shells in my pouch and shoot. I don't want to mess with two piles of shells.
