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Joined: Jan 2002
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Sidelock
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OP
Sidelock
Joined: Jan 2002
Posts: 306 Likes: 2 |
Hello, I will make a pair of inserts to use a very pitted 12 ga barrels from an old Darne shotgun. The idea is to make a 12 to 20 ga tube about 1 foot long, to avoid the heavy pitted area in the barrels. My question is, the steel that it is locally available are:
-1518 carbon steel or -T-304 stainless steel.
Could you tell me what material is better for the purpose?
I will work the material in a lathe.
Thank you for your replies.
Best,
Jose
Jose M. Fernandez
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Joined: Jun 2008
Posts: 5,539 Likes: 170
Sidelock
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Sidelock
Joined: Jun 2008
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https://www.ebay.com/itm/283147457067?hash=item41ece7522b:g:XfwAAOSwYxBaHraj&amdata=enc%3AAQAHAAAAoL85WC4noFCgoi8Jiaxp5%2FydFuTCILk5zl2KGix7dD7CAhKu9VWpU0Tzd%2FzE8GdNInBYGVMu5W1BJ%2FXxNBQlyKZ7UWz%2B74LUX4RePeV%2B3XbMFGRTcKZJ0RsCprXCXGg%2Fk3n%2FaliK1WJEMOoKKAH9%2F6EOiW4rSGL9pEIFD6e%2Ba1GN6qs6wRkeAsOAXRTaCSq28EB22EEnplGf1axPUtozZxA%3D%7Ctkp%3ABk9SR56ujvmDYQ
Copy and paste above
Briley Sidekick, easy
Mike
Last edited by skeettx; 10/28/22 01:12 PM.
USAF RET 1971-95
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Joined: Jan 2002
Posts: 306 Likes: 2
Sidelock
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OP
Sidelock
Joined: Jan 2002
Posts: 306 Likes: 2 |
Hello Skeettx,
Yes that is probaby the best solution... if I live in USA. Belive it or not, those inserts are considered by law "firearms parts" so you can not import them and if you bring them with you from USA, you commited a crime! The option to make my own inserts is the best to make usable a fantastic shotgun that, besides the damage inside the barrels, are in really nice condition. So, I still need to know, what steel to use (I know 4140 is the forum recomendation, but I can not find them here).
Jose M. Fernandez
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Joined: Mar 2002
Posts: 7,744 Likes: 496
Sidelock
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Sidelock
Joined: Mar 2002
Posts: 7,744 Likes: 496 |
Might be easier to find a pair of 20 ga single barrels and turn them down to make what you want. For that matter the 12/20 chamber inserts do well.
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Joined: Mar 2002
Posts: 2,857 Likes: 384
Sidelock
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Sidelock
Joined: Mar 2002
Posts: 2,857 Likes: 384 |
Anytime you use old shotgun barrels you will have some problems getting them concentric I have used pump shotgun barrels to make sleeves some are very heavy but pretty concentric it might be easier to hone the barrels to find out how bad they are.
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Joined: Jan 2009
Posts: 391 Likes: 11
Sidelock
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Sidelock
Joined: Jan 2009
Posts: 391 Likes: 11 |
If the tubes you make are well fitted with no (Minimum!) clearance, the 1518 would likely work. Remember, they will be supported by the original barrel. Past 10 inches, pressure is low. I have made short (2 3/4) inch long) 16 to 20 adapters from similar, and lock-tited in place. I have had no problem. My advice worth what you paid!
Dumb, but learning...Prof Em, BSc(ME), CAE (FYI)
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Sidelock
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Sidelock
Joined: Jan 2002
Posts: 306 Likes: 2 |
Thank you for your reply, DmColonial! What I can purchase here is a "barra hueca" (hollow bar by the translator); it already has 16 mm inside diameter, that is a lousy 20 ga bore (0.630"), so the main lathe work is outside (easier). Locally, 1518 steel is 8 times cheaper than T-304 stainless, so if you think it will work SAFETLY, I will use it.
Best,
Jose
Jose M. Fernandez
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Joined: Jul 2012
Posts: 4,498 Likes: 211
Sidelock
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Sidelock
Joined: Jul 2012
Posts: 4,498 Likes: 211 |
The barrel should be concentric if you turn it between centers. Mikr
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ithaca1 |
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Sidelock
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Sidelock
Joined: Jan 2002
Posts: 9,772 Likes: 758 |
What do the barrel walls measure? Every Darne at my house, 3 at the moment, is over .050 wall. I’ve measured guns that had .020-.030 thicker walls, too. If the gun saw double or triple proof, when it was a new gun, you might not need to worry too much, if you feed it light hunting loads.
Let’s see a photo of the flats and the tubes where they enter the flats.
Best, Ted
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1 member likes this:
mc |
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Joined: Mar 2002
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Sidelock
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Sidelock
Joined: Mar 2002
Posts: 2,857 Likes: 384 |
Original barrels are interesting to turn on center
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