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bolt lug contact

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  #1  
Unread 12-09-2005, 03:36 PM
 
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bolt lug contact

Is there an easy way to see what amount of lug contact a bolt has?
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  •   #2  
    Unread 12-09-2005, 03:53 PM
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    Re: bolt lug contact

    Remove the bolt from your rifle, hold the bolt in one hand letting gravity do the rest, look at the back of the bolt lugs, they are painted black. How much silver do you see? Take a peek at jb's .25-06 for sale he has two pics of a 100% contact bolt.
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      #3  
    Unread 12-09-2005, 05:08 PM
     
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    Re: bolt lug contact

    Ok. Here is what I have. To me, it looks even from one to the other. Mabe 75% contact. Is the % of contact important to accuracy or the evenness from one to the other?
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      #4  
    Unread 12-09-2005, 06:18 PM
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    Re: bolt lug contact

    Do you grease the lugs? It looks like a little galling going on.Im no expert though [img]/ubbthreads/images/graemlins/confused.gif[/img]
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      #5  
    Unread 12-09-2005, 09:26 PM
     
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    Re: bolt lug contact

    Yes. What is galling.
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      #6  
    Unread 12-09-2005, 11:10 PM
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    Re: bolt lug contact

    Galling-scoring,pulling metal from one surface to another.Like I said Harv,Im no expert but the bottom pic looks like theres good even contact with slight galling at the top (outer edge) of the lug.The top pic isnt showing quite the same smooth contact as the bottom pic.Hopefully Fifty or someone else with a little more knowledge will see your pics posted and comment.
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      #7  
    Unread 12-10-2005, 01:49 AM
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    Re: bolt lug contact

    Harv, 100% bolt contact is important for accuracy. The contact lets the bolt react the same for every shot as I understand it, otherwise your lock up varies from shot to shot effecting accuracy. [img]/ubbthreads/images/graemlins/shocked.gif[/img]
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