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Two general questions regarding 1886.
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October 7, 2024 - 6:13 pm
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Hello all,

I am in the process of barreling an 86 Win. TAKE DOWN to 40-65.  The original barrel is rotted.

I have two questions:

First, what is the purpose of the 3 screws in the receiver extension?

Second, what would be the best rate of twist using a 265 gn cast bullet?

Thanks for the help

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October 7, 2024 - 6:34 pm
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The three screws are there for the adjustment of the take down should it loosen up. 

The original factory twist rate for the 40-65 WCF was 1:20

Bert

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October 7, 2024 - 7:25 pm
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But, these 3 screws do not protrude through the extension at all.  They are on the forend side of the extension. There are 3 blind holes in the extension.  They are just “there” with no apparent function at all.  I know what you’re suggesting and how that would work if in fact they did protrude…however, these don’t and none of my other 4 1886’s show any sort of adjustment capability either???? 

Was that 1:20 for the 260 gn bullet?

Thanks,

John

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October 7, 2024 - 7:44 pm
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Tyke said
But, these 3 screws do not protrude through the extension at all.  They are on the forend side of the extension. There are 3 blind holes in the extension.  They are just “there” with no apparent function at all.  I know what you’re suggesting and how that would work if in fact they did protrude…however, these don’t and none of my other 4 1886’s show any sort of adjustment capability either???? 

Was that 1:20 for the 260 gn bullet?

Thanks,

John

John,

The (3) screws & holes are indeed “blind” holes.  The steel underneath the bitter end of the screws is very thin so that it can easily be deformed to create a raised dimple on the face of the take down extension when the screw is turned in (thereby tightening it).  

The 1:20 twist rate was optimum for the original factory 260-gr bullet load for the 40-65 WCF cartridge.  It should be more than adequate for a 265-gr bullet.  However, if you want to shoot heavier bullets (300-gr or heavier), I recommend using a faster 1:18 or even 1:16 twist rate.

Bert

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October 7, 2024 - 8:34 pm
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There are a very few videos detailing this adjustment but they all warn to not mess with it unless absolutely needed, and even then in very small quantities.

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October 7, 2024 - 9:15 pm
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AHHHHHH….  Makes perfect sense!!  Thank you very much for the info, Bert.  I sort of figured if anyone knew it would be yourself.

OK…1:20 it is.

Very much appreciate your input.

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October 7, 2024 - 9:19 pm
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Tyke said
AHHHHHH….  Makes perfect sense!!  Thank you very much for the info, Bert.  I sort of figured if anyone knew it would be yourself.

OK…1:20 it is.

Very much appreciate your input.  

You are welcomeCool

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October 7, 2024 - 9:22 pm
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Jeremy P said
There are a very few videos detailing this adjustment but they all warn to not mess with it unless absolutely needed, and even then in very small quantities.

  

True… I just adjusted one for a WACA member last week (on a Model 1894 Take Down).  If the proper tools and technique are used, it is actually not difficult and it poses no danger to the rifle.

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October 7, 2024 - 11:05 pm
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Back when I was collecting takedowns, that was one of the thing I would look at to see if its been tightened already. That would give me a idea of how much use it had. Once there are tightened and taken apart a few times you would see the dimples that wore a lot quicker.

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October 8, 2024 - 4:15 pm
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All of this is why I don’t take them apart.  If they are tight, I don’t mess with them.

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