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Discussion Starter #1
My brother-in-law gave me a single shot 12 gauge. Says it's an ria tradition. Nickel and blued steel. It's got threading for changing chokes, but he couldn't find them. I've looked and cant find any information online about what thread pattern it might be. Not really sure what to do about it. I don't want to shoot it without a choke.
 

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All I have found is that they seem to come with a fixed choke. Did he have it threaded after the fact?
 

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Discussion Starter #3
That could be why I'm having trouble finding anything. He didn't have it done himself. He's a contractor and did a job for a lady whose husband had died and she was getting rid of his things. He did some trenching and irrigation for a handful of different shotguns. This one just was recieved like this.
 

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You might call Briley in Houston and talk to them. If they didn't do it, they still might know something. If not, if you can get a smith to determine the thread style and pitch, you might be able to then determine your answer. If I had to guess, it MIGHT be the same as Mossberg and basic Beretta Mobilchoke.
 

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It could be me but looking at the pic and the choke it would seem the choke would need to extend down the barrel until it closes the gap (you can see the shoulder in the pic). Check out this site: https://trulockchokes.com/ It has some good info on choke tubes.
 

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Going to a smith tomorrow is doable. I'll try to show you. I've got a modified from my mossberg. If this picture will load that's what I'm looking at. About half that choke hangs out, haha.

That's because your barrel is threaded at the muzzle while the Mossberg is threaded at the choke skirt
 

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Discussion Starter #11
That makes sense. Probably what happened there. Would that be some kind of extended choke? Probably just taking it to a gun smith might be my best bet.
 

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Just make sure you are talking to a smith who knows about shotguns and not some guy who merely changes Glock parts.
 

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Discussion Starter #13
I'll do my best with the gunsmith. Thanks for all the responses. I never realized how frustrating this could be. Theres entirely too many choke systems, haha.
 

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call Armscor/RIA..........they may at one time let a single shot model out on the market with choke tubes........if so, chances are its the same choke tubes they offer for their other current shotguns...........
 

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Most good gunsmiths or small mom and pop gun shops will usually have a bunch of used chokes laying around that they can try. Yes, do not shoot it without a choke in place!!
 

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It could Be that someone built a budget “TarHunt” single shot slug gun. I’ll bet it had a rifled choke tube. As you now kw, the trick is to find the tube fits. Is it drilled taped for scope mounts?
 

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Discussion Starter #19
Okay, so here's an update. I took it to a local gunsmith, and we found out they did make a few from the factory with changeable chokes. The thread pattern is the same as the benelli/beretta Mobil. 20.00 later I have a full choke and a decent little budget gun. Thanks everyone for the help and responses. I'll probably pick up some other chokes just for versatility. On a related note, standard rifled slugs will run through a full choke, right?
 

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Yes they will. The choke will swage the slug down some. Don't shoot them without the choke. It will mess up the threads.
 
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