Sidearms & Scatterguns Best choke thread pattern for an SBS?

Hollywood 6mm

Old Salt
Full Member
Minuteman
Dec 9, 2013
3,104
2,311
Flori-duh.
I'm waiting on the last few parts to show up so I can assemble my recently approved F1 SBS, but the one thing I haven't made a decision on yet is chokes. I'm building this off a Mossberg 590 Shockwave, which has a straight cylinder bore. For those that have done similar builds, what would you suggest for getting this thing threaded?