Barrel replacement

[54ball]

 My friend has a lower priced custom gun that in my opinion needs the barrel replaced. The barrel is 46" full round and tapers from about 1 inch to about 7/8-13/16. It's a homemade DOM barrel in .62 poorly filed at the lock bolster.

 I'm thinking about having a tapered octagonal barrel made for it in a rifle caliber. In your opinion is this doable, having a tapered octagonal barrel made and fitting it to the existing round channel?

 Thanks.

[E.vonAschwege]

If I were handed the gun and said "do something with this", I would restock the existing parts with a new barrel and piece of wood.  In truth, a lot of octagonal barrels have hogged out rounded barrel channels, but fitting an octagonal barrel to a stock that is already shaped may prove more difficult than its worth.  It's probably doable, but I could see it being quite a headache too.  Better to start fresh with a new piece of wood and a proper barrel. 
-Eric

[smokinbuck]

Evon is right about it possibly being more difficult than it is worth. I recently went the other way. I had a rifle with a 1" octagon barrel and turned it octagon to round. I bedded the round portion of the barrel into the 1" octagon barrel channel and it worked out fine. Octagon into a round channel could be a headache.
Mark

[54ball]

 Thanks Eric and Smoking Buck. That's not what I wanted to hear but it is sound advice. Thanks again.

[David R. Pennington]

You could send the old barrel to one of our barrel makers and have them turn one to the same profile. I am sure Ed Rayl could do that.

[frogwalking]

Or, you could have it bored and  sleeved with a nice rifled liner.

[WadePatton]

Glue wood into old channel, inlet bbl of choice. 

a major do-over.  best of luck.

If i was doing it that way, i'd get a 1" hardwood dowel and fit it.  Just a taper right?  Then let in new bbl.

[TMerkley]

It all comes down to the much time and effort you want to put into it.
If you know someone with a router, and identify how much wood has to be removed, it is not be all that difficult. Doing it by hand would be about 3 hours. The majority of the wood has already been removed.