Need help installing a choke on a 12g Cyl bore

[clegger]

I've got a mossberg 590A1 with a 20" heavy barrel. The barrel currently has a fixed non-removable cylinder choke.

Does anyone in the edmonton area ream and thread shotgun barrels?

Is it worthwhile to buy a reamer and guide set for myself?

This gun could really be improved with a improved cylinder choke, maybe even a "loose" modified.

 

[lejarretnoir]

The cost of buying the correct size reamer, tap, bore guide and chokes outweighs buying a new barrel.

 

[dogzilla]

Virtually any gunsmith will do it for you. It isn't exactly a DIY job unless you have access to and know how to run a lathe (not just fart around on a lathe, there's a difference)