close
Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Gunsmithing

Reply

Bolt Binding

LinkBack Thread Tools Display Modes
  #1  
Unread 03-07-2013, 04:32 AM
Silver Member
 
Join Date: Jun 2011
Location: MO
Posts: 184
Bolt Binding

As most know, the more recent Remington Model 700's have and "anti-bind" feature built into the bolt and reciever. I have an old 721 that I want to use for a 300 H&H build but the bolt has a tendency to bind a bit on the extraction stroke about an inch from the full forward position. I plan on using a PTG bolt and I was wondering if using a bolt with with minimal clearances to the receiver would help alleviate the binding issue. As usual, thanks for the help.

Cody
Reply With Quote
  •   #2  
    Unread 03-07-2013, 06:51 PM
    Platinum Member
     
    Join Date: Jul 2004
    Location: Texas
    Posts: 7,001
    Re: Bolt Binding

    Quote:
    Originally Posted by Duvel View Post
    As most know, the more recent Remington Model 700's have and "anti-bind" feature built into the bolt and reciever. I have an old 721 that I want to use for a 300 H&H build but the bolt has a tendency to bind a bit on the extraction stroke about an inch from the full forward position. I plan on using a PTG bolt and I was wondering if using a bolt with with minimal clearances to the receiver would help alleviate the binding issue. As usual, thanks for the help.

    Cody

    The first thing I would try would be to use a "Little" dry grafite (To much will make a mess).

    If you do decide to go with a new bolt you need to mic. the action bolt bore (This is not easy
    and should be done several times to make sure you have the correct dimensions.

    I made a step manderal starting with a 1''x .997 dia. and going up .001 larger until I reached
    .701. it will measure the tightest spot if not perfically round and when it fits tight or wont
    go in the action I know what the bore diameter is, then I can grind the bolt .002 Minimum to
    .0035 Maximum smaller.

    J E CUSTOM
    __________________
    "PRESS ON"
    Reply With Quote

      #3  
    Unread 03-08-2013, 11:00 AM
    Silver Member
     
    Join Date: Jun 2011
    Location: MO
    Posts: 184
    Re: Bolt Binding

    Thanks JE for the advice. It turns out that using a bolt with minimal clearances does alleviate the binding. In a short conversation with a friend of mine about this, he mentioned that he had a PTG bolt for a Remington 700. To my knowledge, the early 700's(pre anti-bind) and 721's were basically the same except for a few cosmetic differences. I measured my bolt and it actually had a slight taper, .693" in the rear and .695 in the front. The PTG Bolt measured .700" exactly. He was gracious enough to let me stick the new bolt in my 721 and give it a few vicious dry cycles. TADA! It ran slicker than a honeymoon erection! I hope this helps anyone that ever runs into this problem.

    Cody
    Reply With Quote
      #4  
    Unread 03-08-2013, 11:36 AM
    Platinum Member
     
    Join Date: Jul 2004
    Location: Texas
    Posts: 7,001
    Re: Bolt Binding

    Quote:
    Originally Posted by Duvel View Post
    Thanks JE for the advice. It turns out that using a bolt with minimal clearances does alleviate the binding. In a short conversation with a friend of mine about this, he mentioned that he had a PTG bolt for a Remington 700. To my knowledge, the early 700's(pre anti-bind) and 721's were basically the same except for a few cosmetic differences. I measured my bolt and it actually had a slight taper, .693" in the rear and .695 in the front. The PTG Bolt measured .700" exactly. He was gracious enough to let me stick the new bolt in my 721 and give it a few vicious dry cycles. TADA! It ran slicker than a honeymoon erection! I hope this helps anyone that ever runs into this problem.

    Cody
    Great !!

    With the bolt being tapered no wonder it was binding.

    When/if you buy a bolt from them tell them what size you want and they will grind it to that dimension.

    Be sure and check your head space with the new bolt. You can buy a head space Gage from them
    at the same time. You can use the GO Gage and place shims between the bolt and head space Gage
    until it won,t close and then measure the thickness of the shims for the head space. Note; do not force the bolt closed just normal pressure on the bolt handle.

    Also you need to remove the ejector to get a good reading. Leave the extractor to extract the Gage.

    Good luck

    J E CUSTOM

    J E CUSTOM
    __________________
    "PRESS ON"
    Reply With Quote
    Reply

    Bookmarks

    Thread Tools
    Display Modes



    All times are GMT -5. The time now is 11:37 PM.


    Powered by vBulletin ©2000 - 2017, Jelsoft Enterprises Ltd.
    Content Management Powered by vBadvanced CMPS
    All content ©2010-2015 Long Range Hunting, LLC