Boring and threading for SG chokes

[Lefty SRH]

Im seriously thinking about sending my Remmy 1100 rifle sight barrel out to get choked i guess. Right now its cylinder bore and id like the opportunity/convenience of changing the choke.
Who would you recommend sending the barrel to be cut for chokes?

[W.R.Buchanan]

Briley. They do it everyday. There are a few others but generally speaking Briley is considered the best.

http://www.briley.com/

Randy