Anyone repair or fine tune the Greener crossbolt mechanism on their sxs? I want to repair the system on my shotgun to optimize action locking.
I found many internet posts on rejoining sxs shotguns with second or third bite Greener crossbolt. Nearly all treat Greener system as though it were merely a marketing gimmick add-on. No post goes into detail on rebuilding the Greener portion, or bothers to ensure Greener system is as tight as possible.
I have an older USA made shotgun with only a Greener crossbolt to keep it closed. No under-lug & bolt locking mechanism. It has a static lug (which also forms the hook), and the Greener style round bolt. The static lug drops into a mortise on the bottom of the receiver. The Greener bolt, actuated by the lever, passes from the left fence, through barrel rib extension hole, and into matching hole in top of right fence.
Shotgun is loose. When barrels and receiver are shut tightly by hand, barrels appear tight and on face. Soot test indicates full, even contact between breech faces and fences, with minimal contact between barrel flats and water table. The crossbolt does not pull the barrels down far enough, the bolt is too loose.
Has anybody repaired a crossbolt system, for real? Not ignored the Greener when rejoining an old shotgun?
I am not looking for explanations of the rejoining process on a three-bite underlug action, or "take it to a fully trained sxs smith". This is a DYI project, with perhaps the hire of a good TIG welder.
Thank you.