This idea is preposterous. I like some of you, so I won't call it idiotic.
I for the life of me can't understand why no one has said so yet.
The most overbored barrels being sold I know of are Mossberg 835 barrels at .781. Do your math, and figure out if wads will seal in cold weather, and what your theoretical savings is. Presuming perfect concentricity.
Then, Look at Dr Drew's barrel segments picture. Look closely at how they are struck. Between the striking off of the outside taper,the lack of concentricity, and inability to remove material between the barrels, you are embarking on an effort that H&H struggles to do with raw stock and aerospace equipment.
You will destroy a set of vintage barrels unnecessarily, and waste a good sum of money in the effort.
If you want a Flues with light tubes, buy one, there are tons of ripply ones floating around. Have them restruck to remove the belt sander finishing, and redo the chokes. I've posted picks of a light and a heavy here before.
Of course then, after recontouring a set of vintage barrels you have permanent anxiety over what rounds you feed it.
Yet for about $350.00 you could buy one made that way initially.
