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Thread: Rem 700 firing pin bushing?

  1. #16
    Join Date
    Jan 2009
    Location
    Ca.
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    934
    Loads often have to be on the hotter side to achieve the very best in Benchrest accuracy. And that typically does not make them unsafe but is what is actually required. That and the serious folks competing in the sport are extremely knowledgeable of what it is they are actually doing.

  2. #17
    Join Date
    Feb 2003
    Location
    Lower Dakota Territory
    Posts
    2,182
    Just to dovetail on this a bit...make sure how the bushing/pin turning is going to be accomplished.

    Stan Ware had a 700 come in that had been bushed and the pin diameter reduced at another shop. The bushing had fallen out and the firing pin tip looked like 10 miles of bad road.

    As it turns out, the bushing didn't have enough depth and the pin tip was being retracted behind the back wall of the bushing when it was cocked. As the pin came forward, it didn't have any guiding means other than the fit of the pin assy. to I.D. of the bolt....so the pin tip banged around on the back of the bushing before going through the hole. After enough banging around, the bushing got knocked loose from the LocTite retaining it and out it came.

    Stan did a threaded 't' shaped bushing and fitted it to the bolt face. The 't' shape provided a guide for the pin tip. I remember he cut a short straight section along a section where it was originally tapered and made that area and the pin tip about .003 smaller than the pin hole.

    Problem solved and the gun shot like crazy after that.

    FWIW. -Al
    Last edited by Al Nyhus; 05-18-2021 at 03:19 PM.

  3. #18
    Join Date
    Nov 2006
    Location
    Augusta, Maine & Palm Coast, Fl
    Posts
    6,443

    I had a custom action

    Quote Originally Posted by Al Nyhus View Post
    Just to dovetail on this a bit...make sure how the bushing/pin turning is going to be accomplished.

    Stan Ware had a 700 come in that had been bushed and the pin diameter reduced at another shop. The bushing had fallen out and the firing pin tip looked like 10 miles of bad road.

    As it turns out, the bushing didn't have enough depth and the pin tip was being retracted behind the back wall of the bushing when it was cocked. As the pin came forward, it didn't have any guiding means other than the fit of the pin assy. to I.D. of the bolt....so the pin tip banged around on the back of the bushing before going through the hole. After enough banging around, the bushing got knocked loose from the LocTite retaining it and out it came.

    Stan did a threaded 't' shaped bushing and fitted it to the bolt face. The 't' shape provided a guide for the pin tip. I remember he cut a short straight section along a section where it was originally tapered and made that area and the pin tip about .003 smaller than the pin hole.

    Problem solved and the gun shot like crazy after that.

    FWIW. -Al
    way back that happened to. The pin got bent "somehow" . The maker fixed it.

    Pete

  4. #19
    Join Date
    Oct 2005
    Location
    Arizona
    Posts
    294
    Quote Originally Posted by Pete Wass View Post
    a smaller firing pin helps to prevent primer catering and piercing. Rem 700's come with a .075" thick pin, the prescribed pin measures .065". Greg Tennel has a video up on youtube about this process with a cut away bolt. Part of the process is extending the bushing further back into the bolt for more support I think. Both my 700's definitely crater primers and pierce them if the loads are on the hot side. I took the pin out of my custom action's bolt and it is .065". If one looks out the window and everyone id running down the street in the same direction, it's probably not a coincidence.

    I think the mod is worth doing.

    Pete
    As an alternative and a cheap experiment one can do quite well improving .075 dia pins by simply polishing the tip to a mirror finish. Inspect it with magnification and make sure no radial imperfections are left behind. You just might be surprised what this can do for you.

  5. #20
    Join Date
    Nov 2006
    Location
    Augusta, Maine & Palm Coast, Fl
    Posts
    6,443

    That sounds interesting

    Quote Originally Posted by WSnyder View Post
    As an alternative and a cheap experiment one can do quite well improving .075 dia pins by simply polishing the tip to a mirror finish. Inspect it with magnification and make sure no radial imperfections are left behind. You just might be surprised what this can do for you.
    I'll give er a try this week.

    Thanks,

    Pete

  6. #21
    Join Date
    Jul 2005
    Posts
    638
    Quote Originally Posted by Al Nyhus View Post
    Stan did a threaded 't' shaped bushing and fitted it to the bolt face. The 't' shape provided a guide for the pin tip. I remember he cut a short straight section along a section where it was originally tapered and made that area and the pin tip about .003 smaller than the pin hole.

    Problem solved and the gun shot like crazy after that.

    FWIW. -Al
    This is how I always did it.
    Threaded plug.
    Make sure the thread are VERY accurate.

    Ream the final hole to size.

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