I am curious what substantial modifications can be done to a DR outside of sights, recoil pad etc.

I am sure forum members can state whether specific mods are possible or pure folly.

Is it even possible to ream a DR to a different hull casing size without destroying the solder between barrels? Obviously you would have to reregulate and proof the gun again. As an example--If I wanted to have a wildcat 9.3 bore based on a 375 Flanged cartridge casing I would ream out the 9.3 x 74R .

I would assume that reboring the barrel bore of an existing Double barrel is out of the question as well. due to the soldering involved etc.

Comments??