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shotgun barrel threading #7211345
03/10/21 03:31 PM
03/10/21 03:31 PM
Joined: Sep 2013
Posts: 10,054
Green County Wisconsin
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GREENCOUNTYPETE Offline OP
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GREENCOUNTYPETE  Offline OP
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Green County Wisconsin
I am about to send in a 870 12ga 20 inch smooth bore slug barrel for threading to take Rem Chokes

I had been on the look out for a barrel that came threaded for chokes at a decent price and 18-21 inch barrels with chokes just seem like a rare thing. especially rifle sights and chokes

I suspect many of the 18s and 20s are made to a price point and most people only think about using them for short range shooting.

I keep thinking how much more versatile a 20 inch gun that is easy to carry would be if I could also get a good pattern out of it.

currently it is an I/C it shoots slugs decent but nothing to brag on I have better slug barrels.

I think I am going to pattern it with a few loads at 10 , 25 , 35 and 45 yards this weekend take pictures and then send it off so I have comparison when I get it back.

have you sent in barrels to get threaded ?

I am looking at Carlson , where did you send yours?

do you have a shorter 18-21 inch barrel with choke tubes and how do you like it ?

Last edited by GREENCOUNTYPETE; 03/10/21 03:33 PM.

America only has one issue, we have a Responsibility crisis and everything else stems from it.
Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211350
03/10/21 03:36 PM
03/10/21 03:36 PM
Joined: Oct 2009
Posts: 3,290
east central WI
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k snow Offline
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east central WI
I've got a 21 inch on my 870. I use it mainly for turkey, with an extra full Remington choke. Patterns well with Regular 3 inch magnums. I tried several different brands of slugs through an I/C choke as well as a "slug" choke and could not get it to pattern well. Could have been me. I hated the recoil.

For kicks, I fired 2 shots from my gun using 3 inch magnums, Then I took off the 21 inch barrel and replaced it with a 28 inch barrel. Same choke tube. Man, did the 28 inch recoil less than the 21. Again, may have been me, but I swear there was a huge difference.

Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211357
03/10/21 03:54 PM
03/10/21 03:54 PM
Joined: Sep 2013
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Green County Wisconsin
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GREENCOUNTYPETE Offline OP
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Green County Wisconsin
the weight from 7 more inches of barrel and it is out where it makes a difference could cause less felt recoil. an extended ported choke tube can make a difference also

how was the group the same with the same choke ?

the recoil from the 20 inch slug barrel can be a bit much with slugs


America only has one issue, we have a Responsibility crisis and everything else stems from it.
Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211360
03/10/21 03:54 PM
03/10/21 03:54 PM
Joined: Feb 2007
Posts: 440
N. Dakota
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1lessdog Offline
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N. Dakota
A shotgun reach's maximum velocity at 21 inches. So anything after that is waste, you do get a longer sight plan is all.

Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211364
03/10/21 04:00 PM
03/10/21 04:00 PM
Joined: May 2010
Posts: 2,170
The great cage state Colorado
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Monster Toms Offline
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The great cage state Colorado
Being IC now it may not be thread-able. Id mic it and see what it measures in relation to the new bore size.






Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211367
03/10/21 04:04 PM
03/10/21 04:04 PM
Joined: Oct 2009
Posts: 3,290
east central WI
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k snow Offline
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east central WI
Originally Posted by GREENCOUNTYPETE
the weight from 7 more inches of barrel and it is out where it makes a difference could cause less felt recoil. an extended ported choke tube can make a difference also

how was the group the same with the same choke ?

the recoil from the 20 inch slug barrel can be a bit much with slugs


Don't recall exactly. My dad uses the 28 inch barrel and shoots the same loads I do, pattern is very similar. He runs a different choke tube though. We did the patterning about 20 years ago. I really don't want to do it again. I am not a recoil fan.

Re: shotgun barrel threading [Re: Monster Toms] #7211374
03/10/21 04:15 PM
03/10/21 04:15 PM
Joined: Sep 2013
Posts: 10,054
Green County Wisconsin
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GREENCOUNTYPETE Offline OP
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Green County Wisconsin
Originally Posted by Monster Toms
Being IC now it may not be thread-able. Id mic it and see what it measures in relation to the new bore size.


I called Carlson and thy go by external measurement you need


Remington Flush Choke Installation (12 GA ONLY)
Includes three flush chokes and 2 wrenches. (Min. OD of .875" required)

I have .880" on my barrel

the true choke system limits the tubes you can buy a little but it can go with a thinner barrel
MINIMUM OUTSIDE BARREL DIAMETER MEASUREMENTS FOR CHOKE INSTALLATIONS:
12 ga. lead shot and steel shot system .825"


America only has one issue, we have a Responsibility crisis and everything else stems from it.
Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211711
03/10/21 09:06 PM
03/10/21 09:06 PM
Joined: Aug 2010
Posts: 7,774
Asheville, NC
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charles Offline
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Will the gunsmith cut the choke out of the barrel before threading? Seems m like that would be necessary.

Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211731
03/10/21 09:21 PM
03/10/21 09:21 PM
Joined: Sep 2010
Posts: 1,648
MI.
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Feedinggrounds Offline
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Last I checked it cost north of $400.00 per gauge, to tool up for reaming and threading a barrel for choke tubes. None of my local smiths are tooled to do it yet.


your only allowed so many sunrises... I aim to see every one of them!
Re: shotgun barrel threading [Re: charles] #7211733
03/10/21 09:21 PM
03/10/21 09:21 PM
Joined: Sep 2020
Posts: 61
Missouri
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Osagian Offline
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Missouri
Originally Posted by charles
Will the gunsmith cut the choke out of the barrel before threading? Seems m like that would be necessary.

Yes, unless you want barrel cut down. Choke is in the last few inches of the barrel. So, if you're staying with the same length barrel first the barrel is reamed to get rid of the old choke then the choke reamer is used.

Re: shotgun barrel threading [Re: Feedinggrounds] #7211745
03/10/21 09:28 PM
03/10/21 09:28 PM
Joined: Sep 2020
Posts: 61
Missouri
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Osagian Offline
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Missouri
Originally Posted by Feedinggrounds
Last I checked it cost north of $400.00 per gauge, to tool up for reaming and threading a barrel for choke tubes. None of my local smiths are tooled to do it yet.

Lots of smiths are doing what I do, just rent the reamer, use it and send it back. It's not bad, they let you use it for I think 5 working days excluding time in transit for shipping was around 50 bucks as I remember. A couple of companies out there renting reamers. 5D and Pacific Tool. No I'm not a gunsmith. Just a a guy with a lathe.

Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211755
03/10/21 09:33 PM
03/10/21 09:33 PM
Joined: Feb 2013
Posts: 1,293
Northern Illinois
huntrap247 Offline
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I did exactly what you are doing several years ago. 870 slug barrel with IC choke and iron sights.

I had my barrel threaded so I could use it for turkey hunting. I don't remember were I sent it but it was a private gunsmith, and cost less than $100.

I love hunting with it being that it is much easier to handle for turkey hunting, and the iron sights keeps my head down.

Interesting side note, with the loads I use, my regular rem full choke outperformed my turkey super full outta the shorter barrel.


Some people refuse to see the truth when you bludgeon them over the head with it.


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Re: shotgun barrel threading [Re: Osagian] #7211761
03/10/21 09:35 PM
03/10/21 09:35 PM
Joined: Sep 2010
Posts: 1,648
MI.
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Feedinggrounds Offline
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MI.
Originally Posted by Osagian
Originally Posted by Feedinggrounds
Last I checked it cost north of $400.00 per gauge, to tool up for reaming and threading a barrel for choke tubes. None of my local smiths are tooled to do it yet.

Lots of smiths are doing what I do, just rent the reamer, use it and send it back. It's not bad, they let you use it for I think 5 working days excluding time in transit for shipping was around 50 bucks as I remember. A couple of companies out there renting reamers. 5D and Pacific Tool. No I'm not a gunsmith. Just a a guy with a lathe.

I have seen it done on You Tube with a hand turned brace. Seemed straight forward. My best bud runs a machine shop, and the lathe would sure be nice.


your only allowed so many sunrises... I aim to see every one of them!
Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211813
03/10/21 10:14 PM
03/10/21 10:14 PM
Joined: Sep 2013
Posts: 10,054
Green County Wisconsin
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GREENCOUNTYPETE Offline OP
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some day maybe I will try threading my own for now I think I will just send it to carlson. unless I call around and find some one local who does chokes to save me the shipping

odd thing is I will have more in the threading and chokes than the gun.

but less in the gun , threading and chokes than buying a new or used gun it is.

a handy gun to carry the Police 870 mag was all the best parts and they currently sell for between 500 and 800 dollars used depending on shape. even then it still wouldn't have chokes.


America only has one issue, we have a Responsibility crisis and everything else stems from it.
Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211861
03/10/21 10:38 PM
03/10/21 10:38 PM
Joined: May 2018
Posts: 4,572
SW Georgia
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Wanna Be Offline
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SW Georgia
My son was gifted a left handed Wingmaster 870 12ga many many years ago. I sent it off, with permission, to get it made into a turkey gun. They lengthened the cone for 3Ē and cut the barrel and threaded it, and patterned it with a custom made turkey choke. I had them install a Burris FFIII on top along with fiber optic sights. I canít remember the cost, but it was cheaper than a new turkey gun. He has killed a pile of turkeys with it too.

Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211874
03/10/21 10:49 PM
03/10/21 10:49 PM
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higginsville, mo
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headache73 Offline
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I've got a 97 Winchester I'm planning to do the same thing to. I'm glad this topic came up

Re: shotgun barrel threading [Re: Osagian] #7211876
03/10/21 10:50 PM
03/10/21 10:50 PM
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Northeast Oklahoma
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Mike in A-town Offline
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Northeast Oklahoma
Originally Posted by Osagian
Originally Posted by Feedinggrounds
Last I checked it cost north of $400.00 per gauge, to tool up for reaming and threading a barrel for choke tubes. None of my local smiths are tooled to do it yet.

Lots of smiths are doing what I do, just rent the reamer, use it and send it back. It's not bad, they let you use it for I think 5 working days excluding time in transit for shipping was around 50 bucks as I remember. A couple of companies out there renting reamers. 5D and Pacific Tool. No I'm not a gunsmith. Just a a guy with a lathe.


I keep getting told I can rent a reamer... And I'm like why? I can buy a reamer from PT for about $180... For the cost of renting one 2 or 3 times I'll own one and can use the exact same reamer to rechamber every time I buy a new barrel.

I'm a bit fussy about consistency though... Might just be me. Lol

Mike


One man with a gun may control 100 others who have none.

Vladimir Lenin
Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7211965
03/11/21 01:04 AM
03/11/21 01:04 AM
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N.W. Iowa
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Tactical.20 Offline
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Thirty or more years of ago I sent my 870 to Bansners in pa to get modified, they changed chamber to 3", shortened the barrel, installed a long forcing tube for tight groups, turkey or predators, no more buckshot! 😆

Re: shotgun barrel threading [Re: Tactical.20] #7211974
03/11/21 01:40 AM
03/11/21 01:40 AM
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Missouri
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Osagian Offline
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Missouri
Originally Posted by Tactical.20
Thirty or more years of ago I sent my 870 to Bansners in pa to get modified, they changed chamber to 3", shortened the barrel, installed a long forcing tube for tight groups, turkey or predators, no more buckshot! 😆

Yep. Pressures are the same, and 870 2 3/4 and 3" receivers are the same, just a 1/4" difference on where they mounted the ejector on some of them, on some not. Must have been an engineering change back there sometime.

Re: shotgun barrel threading [Re: GREENCOUNTYPETE] #7212068
03/11/21 08:26 AM
03/11/21 08:26 AM
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Henry Co, IL
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3togo Offline
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I would only send to Briley in Texas. They will measure the wall thickness of your barrel all around to make sure to use the correct pilot for machining and threading the barrel. If you want to continue to shoot slugs through it make sure you clearly tell them, slugs require a maraging steel material to prevent swelling and sticking the choke tube in the barrel.

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