X2 recommendation for Casey at TacOrd!
I had Epps thread my Mossberg 590 Blackwater for chokes. Had heard that the 590 barrels were pretty thick and could be threaded for most chokes. Gunsmith at Epps however swore only thin walled chokes would work. Questioned him on this and he was adament ...only thin walled chokes would work...so somewhat hesitantly had him do the job. Only to discover later he was wrong and I could have it threaded for the same Remington chokes on my Versa Max as a buddy had Casey at Tacord do for him on his Mossberg 590. And don't get me started on what a pain it was to source thinned walked chokes.
Long story short, when in doubt, I now always give Casey at TacOrd a call first.