I just lengthened a GECO Belgium gun to 2.75, I also opened the chokes to Skeet/IC
It is my gun, for me to shoot, and if I hurt the value, that is OK to me,
The chambers are stout.
I do load 2.5 inch 16 gauge ammo, for my old Kreighoff drilling and my Win Model 12s
but I have flats upon flats of 2 3/4 ammo.
I am happy
Mike
I think I remember measuring bores, chokes and such on one of those guns a long time ago. I don’t recommend it, but, I’d bet you can stuff a 20 gauge round in those bores, put a 12 in the chamber, fire it, and not hurt anything, save the two rounds.
It had very heavy barrels ,as I recall.
Best,
Ted
