I have a 16 gauge 1907 0 grade LC with Damascus Barrels. Looking to possibly replace the barrels with Armor Steel barrels from a 1923
16ga field gr Elsie. To anyone's knowledge, would this be an interchangeable fit? And...would my existing forearm also fit on the steel barrels...?
the inside of the tubes look very pitted or corrosive > so I've never attempted to fire it.

This was my granddads shotgun & I posted about it long ago IIRC.
The forearm was in need of repair due a nail being driven into it & the ebony tip was chipped out. I have since repaired that.
In the process now of recuttng the buttstock end & adding a recoil pad, along w/ refinishing the stock & forearm. Someone had previously cut the stock at a weird angle.