I have recently acquired a Holland and Holland hammer toplever Paradox that I am renovating. Barrels are original 28" length and 1/4 rear rib for rear sight and side clips. There is however a major problem. Unfortunately sometime in its history the choke rifling has been removed, out to bore diameter leaving cylinder bores in both barrels. I presume this was done to enable the firearm to be held on a shotgun certificate in the UK, as the bores are otherwise mirror and bright. My question is now what is best to do with this situation? Do I leave as is both cylinder bores, have them both threaded for thin wall choke tubes or is there a way to have paradox rifling inserts reinstalled in the barrels to return to as original?
Thank you for your experienced opinions.