Many thanks for the comments.
And thanks for the fantastic advice DBLGN.
Was more hoping to keep the 16 gauge barrels and have another set made to fit.
Commission barrels from where, of you don't mind me asking?
This would be years down the track, but I think when the time comes maybe ill look for another gun.
Bores look pretty good, a spot or 2 have a mark though.
On another note, don't spose any of you know from those pics how to take the barrels off??as far as I can tell their isn't anything on the forend and the lever only twists to the one side.

Is there any possibility of a smokeless load in this?

Cheers.