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bolt lug contact

 
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  #1  
Old 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  
Old 12-09-2005, 03:53 PM
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Location: East TX
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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  
Old 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  
Old 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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Old 12-09-2005, 09:26 PM
 
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Re: bolt lug contact

Yes. What is galling.
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  #6  
Old 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  
Old 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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