Here are some pics of the repaired section. I have no idea what was used to do it. I thought it was either soldered or welded, but I have no experience or knowledge of metal processes.
As I was speaking to the gun dealer, he explained that this gun was on consignment from a 90+ year old women who’s deceased husband used the gun in the early 1900s. Apparently the gun was in the font seat of the car when he was driving and was in an accident, the impact caused the gun to lodge upward between the seat and the ceiling protecting the him from being crushed, saving his life. It cracked the stock and apparently required the repair you see on the barrels. He continued to use the gun after doing the unique repairs.