Home Forums Hunting & Shooting Gunsmithing Shotgun barrel bore and thread for choke?

I have a Winchester Model 50 12 gauge barrel with a Poly-choke. Would it be possible to remove the Poly-choke and drill/tap the barrel for screw-in choke tubes? The current barrel throws a poor pattern and I would like to replace the existing barrel with a fixed choke barrel or perform the modification to my existing barrel as described here. Thoughts? Model 50 barrels can be found but they are not too plentiful…..

Thank You

It all depends on the dimensions of the M-50 barrel. Many Winchester M-12 barrels are too thin to accept any choke tubes and I’m afraid M-50’s may be the same story. If you can accurately measure the ID and OD of your barrel, the Brownells catalog has information about what the required dimensions are for the various choke systems.

Thanks for the information. Have calipers….but not sure if I can get a wall thickness reading with the Poly-choke installed. I will check. Tks!

I know Briley makes a "Thin Wall series" choke that can be used in barrels that are too thin to accept a standard choke. Not sure if your barrel would work or not, worth a call to Briley.

So does Carlson's...

Good to know, do you know if Carlson will do the install or do you need to find a smith with the reamer and tap to do it?
Carlson makes good chokes for sure.

Thanks guys. I’ll look into Briley and Carlson to see what they can do.

Barrel sent off to Brileys for choke installation. Thanks for the tip!

Briley generally does good work on shotguns, think you will be happy.

Folks talks good about Briley, trust he will do a great job