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66CF BOLT
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gene66
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July 16, 2026 - 7:03 pm
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ANTHONY   I would like to try to find a member that has a 66 with genuine factory CF bolt that would be willing to have  all the dimensions taken by a trained machinist for accurate measurements  let me know if you think this is a something that I should pursue or not my best as always to you and yours gene 66

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Anthony
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July 17, 2026 - 11:19 am
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gene66 said
ANTHONY   I would like to try to find a member that has a 66 with genuine factory CF bolt that would be willing to have  all the dimensions taken by a trained machinist for accurate measurements  let me know if you think this is a something that I should pursue or not my best as always to you and yours gene 66
  

gene,

I am very aware of you’re pursuit in this as we’ve discussed in the past and can understand you’re posting this here on the general forum. You’ve been searching for a spare or extra M-1866 bolt with the Center Fire conversion intact that has proven over the years to be as rare as the old proverbial “Hens Teeth”, comparison. 

Possibly if a member has one of the original 1,020 M-1866 Winchesters that we’re sent to Brazil in 1891, they can help out with you’re request in getting numbers with pictures, so you can find a machinist to help you duplicate a bolt that you are having a hard time finding.

A few M-1866 we’re and are converted from the .44 Henry Flat cartridge to the .44 Center Fire cartridge conversion you are seeking, using the original bolt, which IMO, would surly be a lot less challenging and work to accomplish! 

Good Luck in you’re search.

Tony

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gene66
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July 18, 2026 - 4:17 pm
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ANTHONY thanks for your reply am wondering if Cody has any prints or drawings of a CF bolt that can be copied.Curious to know just how many 66 shooters are out there.My best to you and yours as always gene 66

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1873man
Wisconsin
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July 18, 2026 - 4:30 pm
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I have been going through the Cody McCracken Library online and haven’t seen any drawing of the 66 or 73 bolts. 

Bob

WACA Life Member---
NRA Life Member----
Cody Firearms member since 1991
Researching the Winchester 1873's

73_86cutaway.jpg

Email: [email protected]

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Darrin Smith
Central Kansas
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gene66
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July 18, 2026 - 10:35 pm
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1873man and darren thank you both for your help maybe it would be easier just to try and find a 66 rf bolt body only my best to you and yours gene66

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gene66
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July 18, 2026 - 10:38 pm
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ANTHONY lets see if we can locate a 66 bolt body stripped with nothing on it my best to you and yours gene66

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Chuck
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July 18, 2026 - 11:27 pm
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Buy a 66 firing pin and the screw on piece that has the 2 strikers and modify these.  The hard part is making the bushing that takes up the excess headspace. Winchester Bob sells the 2 parts but the bushing is on you.

Read the old posts. 

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gene66
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July 23, 2026 - 5:51 pm
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CHUCK thanks for the help will check it out my best to you and yours  gene 66

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TR
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July 23, 2026 - 9:04 pm
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  Winchester called the 1866 striker the snapper and the firing pin the piston. I have used Winchester Bob’s piston and thread on striker (snapper) and they worked. T/R

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Chuck
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July 23, 2026 - 9:41 pm
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I used his parts to fix a Henry.  There is a difference between the Henry and 66 piston length. 

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gene66
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July 25, 2026 - 10:43 pm
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ANTONY if you get a chance go to44calwin1866 bolt look for AVALUER it shows two pictures of bolts in two places from 2013 one a cf and one just a clean bolt body just wanted to show you im still hunting my best as always to you and yours gene 66

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Anthony
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July 26, 2026 - 12:19 pm
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gene66 said
ANTONY if you get a chance go to44calwin1866 bolt look for AVALUER it shows two pictures of bolts in two places from 2013 one a cf and one just a clean bolt body just wanted to show you im still hunting my best as always to you and yours gene 66
  

Gene,

That’s good work on finding that, as I know you’re search continues! Here’s the link. 

https://avaluer.net/explore/1116006-winchester_1866_bolt_for_44_henry_caliber_with_firing_pin__bolt_face_rare

Signed,

ANTNY  

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Chuck
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July 26, 2026 - 4:04 pm
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In one of the older posts about the 66 center fires I showed a picture of the bolt face of a rim fire next to a center fire.  The center fire is longer.

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