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Thread: Bolt Lift

  1. #31
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    I was curious about this 15 - 20 years back, so I colored the whole pin and spring in front of the shroud of my Viper. After a trip to the range, none of it had rubbed off of the spring or the shoulder that it rests against near the front of the pin. On a viper, the pin tip stays in its bore through the entire cock and fire cycle. I had heard of polishing the inside of a bolt before so I wanted to know if that was needed, apparently not....for that bolt. I have never done this on any other action....you?

  2. #32
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    Quote Originally Posted by Boyd Allen View Post
    I was curious about this 15 - 20 years back, so I colored the whole pin and spring in front of the shroud of my Viper. After a trip to the range, none of it had rubbed off of the spring or the shoulder that it rests against near the front of the pin. On a viper, the pin tip stays in its bore through the entire cock and fire cycle. I had heard of polishing the inside of a bolt before so I wanted to know if that was needed, apparently not....for that bolt. I have never done this on any other action....you?
    Great Test!!! wish't I'da' thoughta' that!

    Same with my Borden's though. "Captured" the whole stroke.

    I have never polished the inside of even a Remington..... I've gotten satisfaction from the outside work.

    I maybe will go look through PS, I seem to recall an article on smoothing a bolt action up.

  3. #33
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    Be careful. Some of what was written in the past was like use grinding compound of the shroud threads and other places. It may have smoothed things out, but as you know there are other considerations. One thing that you could set up in your shop to do is done commercially, and was done on the Viper bolts right at the beginning. Here is a link to a business that does it.
    http://www.microsurfacecorp.com/ws2_...hoCNcAQAvD_BwE
    I believe that it is impacted into the surface of a dry clean part at about 120 PSI. Of course I would have a small cabinet with built in gloves similar to what is used for glass beading or sand blasting. I would not want to put that stuff into air that I was breathing as part of an air jet.
    Some years back, I had some of the powder that I had gotten for a bullet coating experiment (that I never got around to) and I tried rubbing some into the mating surfaces of an old Hollywood powder measure. the outside of the drum and the main casting bore that it ran in. I had cleaned the surfaces of all powder residue and worked the powder into the metal vigorously with a surplus .30 cal. cleaning patch. Wow! did that make it slick when I put it together. It did not last forever, but then I did not apply it like the process above.

  4. #34
    Join Date
    Oct 2014
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    13

    bolt lift

    For alinwa: You have certainly packed a lot of information into your post #8 above. Thankyou.
    You might have raised more questions than you answered: rebuilding the cocking ramp, ball bearings, etc.

    I know this is an old thread, but the info is timeless.

  5. #35
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    Quote Originally Posted by shooter86314 View Post
    For alinwa: You have certainly packed a lot of information into your post #8 above. Thankyou.
    You might have raised more questions than you answered: rebuilding the cocking ramp, ball bearings, etc.

    I know this is an old thread, but the info is timeless.
    thank you for your kind words

  6. #36
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    Nov 2006
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    Augusta, Maine & Palm Coast, Fl
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    Over time

    Quote Originally Posted by Greyfox View Post
    I'm probably exposing myself to criticism here. I enjoyed the video, but was left wondering. That appeared to be a Whidden die which I'm told are very good and are on the spendy side. If one is going to spend big $$ on a die, why wouldn't one get a die that fir the chamber properly? Why would I need another die, such as a ring die to do what the primary size die should have done? Really not trying to be a smartass, but inquiring minds want to know. Since I took Al's advice years ago and started having my reamers ground for "fat butt" chambers, my extraction problems have disappeared. I never have bolt click even with substantial loads. Pretty sure someone will chime in here and straighten me out, so I have my asbestos suit on.

    Rick
    Do the cases expand to the size of the oversized butt area in the chamber? Have wondered about that.

    Pete

  7. #37
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    upstate, N.Y.
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    Quote Originally Posted by Boyd Allen View Post
    I was curious about this 15 - 20 years back, so I colored the whole pin and spring in front of the shroud of my Viper. After a trip to the range, none of it had rubbed off of the spring or the shoulder that it rests against near the front of the pin. On a viper, the pin tip stays in its bore through the entire cock and fire cycle. I had heard of polishing the inside of a bolt before so I wanted to know if that was needed, apparently not....for that bolt. I have never done this on any other action....you?
    Here’s a couple thoughts/ observations that I think can help, can’t hurt.
    On all bolt interior parts…. Pin, spring, bolt interior, I apply Anschutz Ceramic(Keramic) which if one follows directions, leaves no residue, penetrates the metal, and slicks things up nicely. Try some, wipe down bolt body, interior action. You will be impressed how slick things get and how long it lasts……again, nothing to gunk up over time.
    Lasty while installing a couple Kip springs on actions I decided to chuck up the pins in the mill, chucking the pin and indicating the body. While I suspect there is not a ton of friction on the pin itself, you’d be amazed how far off some of these things can be, I was startled. On a long pin I got them down to lass than .001” and they were several times that.
    The Ceramic, been using a couple years on RFBR actions where ignition is super critical and any drag can kill you.
    Last edited by tim; 09-13-2021 at 03:09 PM.

  8. #38
    Join Date
    Jun 2004
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    Quote Originally Posted by Pete Wass View Post
    Do the cases expand to the size of the oversized butt area in the chamber? Have wondered about that.

    Pete
    Yes

  9. #39
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    washington.........STATE that is.
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    Quote Originally Posted by Pete Wass View Post
    Do the cases expand to the size of the oversized butt area in the chamber? Have wondered about that.

    Pete
    no

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