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Using a bolt from one rifle in another rifle

I have a friend who lost the bolt to his chrome moly long action Rem 700 in 7mm Rem Mag. We found a used bolt on the internet that comes from a stainless model 700 in 7mm RUM.

I believe the bolt face won't be a problem, since the RUM has a rim diameter of .539 and the Rem Mag has one of .532. Should be close enough, right?

I am concerned about headspacing and timing. Are Remington's tolerances good enough to allow switching of bolts without headspacing/timing issues? I know that this may not be a perfect situation, but is it good enough from a function and safety standpoint?

Thanks!
 
Are Remington's tolerances good enough to allow switching of bolts without headspacing/timing issues?

No, headspace needs to be checked. Factory = Sloppy.

To be safe a smith needs to check. Don't try to shoot it with incorrect headspace! Kaboom will follow.
 
No, factory bolts are interchangeable sometimes but the headspacing is and individual thing and must be verified on each action.
Nat Lambeth
 
Gotta ask and I'm sure I am not the only curious one; But how do you lose a bolt, more specifically your friend?

Sure, I have lost parts and a scope, but just the bolt? ;D

Dont borrow him anything.... :D
 
It's kind of a sad story. My friend got his head caught in a hay bailer as a child and he seems to misplace things all of the time. It was just last week that he wet his pants because he couldn't find his ....
 

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