Threading a 590a1 bbl for chokes

H

hexbasher

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I'm a machinist. I'll probably single point it on a manual lathe being the cheaper option

What would be a preferred style to thread for. I was thinking of doing a Remington style because it seems there's a great amount of tubes available. I was mainly wanting just to put a tactical choke/standoff device on. I'd also like to play with spreader chokes and a modified choke for slugs.

It looks like a Remington Pro Bore (Versa Max) would be easier machine because the threads are closer to the bore but there's not a lot chokes available

Does anyone know of someone I can rent a regular Remington reamer/tap I could
Rent? I'm a experienced machinist, but I'm a mill guy.
 
There is no such thing as a "tactical" choke. Just choke tubes. Haven't ever seen a spreader that isn't welded or whatever on. Haven't looked for one either though. Suspect that'd be something you could make in a machine shop.
Anyway, the only thing that'd hold you back is the thickness of the barrel. My 870 slug barrel is at least twice as thick as the bird barrel it replaced. So are Mossberg barrels as I recall.
Don't think you'll find taps. Threading for chokes is usually a lathe job. Mill guys tend to know lathe guys. Needs a collet chuck too.
 
Yup, the 590A1 have the heavy barrels that can be threaded to whatever choke. The 500 and 590 (non-A series) have the lighter barrels but can still be threaded but for chokes like the TruLock Tru-Chokes I believe.
 
Tactical Ordnance threaded my Mossy 590 Special Purpose (thin wall) for TruChoke flush choke tubes and did a great job of it.
 
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