What gunsmith threads 28 ga barrels for choke tubes?

[deadbuck]

Have a NEF Handi gun with 2 barrels, a .410 and a 28 gauge. Who threads these with a thread pattern other than Tru Choke thread pattern? I know Rose Action will do the .410 in Winchoke but they dont do any 28 gauge.

[eggshell]

I have used this company for custom work. They made me new firing pins for an old pederson O/U when no one else would touch it. https://www.ahlmans.com/gunsmithing.html