How much to drill and tap a barrel for choke tubes?

[Masterblaster1]

I was wondering what the normal rate would be to drill and tap a smoothbore clyinder choke barrel to accept choke tubes would be.  It would be the winchoke thread, which is used by mossberg, winchester and weatherby.  If anyone can give me a clue how much this kind of work would be please let me know. Thanks a bunch

[Iowegan]

Before you take your barrel in to be threaded, find another barrel that already has choke tube threads. Measure the outside diameter of the barrel muzzle of both guns with a caliper. If yours is the same or larger, there should no problem. Many shotgun barrels that were not made for choke tubes are too thin.

The next issue is what type of metal was used in your barrel. Some are a chrome / steel alloy that is really tough to thread. Don't be surprised if your gunsmith wants to charge you as much as a new barrel to thread it. After market barrels are very available for common shotguns such as Remington, Mossberg, Winchester, and Browning. A new one will run about $150 but used ones can be found for $50-$100.

[gunnut69]

Brownells survey says $85-150 plus whatever the tubes run. This for the common choke tube types.  This also is for bores that are NOT chromed..  Expect the smith to lament loudly when he finds chromed bores.  He also will charge more..  The smith will tell you whether he can thread your barrel but with the common availability of thinwall tubes nearly all shotguns can be tubed.  This does NOT include the Belgian Brownings and any european double, in fact any double at all...not of recent make.  Aa good smith will measure before he cuts.  You will also need to verify that the barrel is round..  it may well not be..  and cutting a round hole in an oblong bore will create a thin spot and mucho trouble.  The Mossbergs were great for having oval bores, although I've seen examples from most makers...