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Old February 19, 2013, 08:24 PM   #12
AR15barrels
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Join Date: August 23, 2006
Location: Los Angeles, CA
Posts: 53
300 win mag headspacing

Quote:
Originally Posted by F. Guffey View Post
The Remington 700 HAS A RECOIL LUG, MEASUREMENTS MUST BE TAKEN WITH THE RECOIL LUG INSTALLED. Or the lug thickness can be measured and then subtracted from other measurments etc..when installing the barrel to the receiver the lug must be held om place.

The difference in the two measurements, from the front receiver ring and bolt face and from the protruding case head down the the barrel (to receiver) seating surface determines the length of the chamber from the shoulder of the chamber back to the bolt face.
Quote:
Originally Posted by HiBC View Post
Mr Guffey,I do agree with you about depth mic'ing from the receiver ring to the bolt face..
OP,make a drawing,then you won't get confused.
Receiver ring to bolt face,add recoil lug thickness.
Did you guys even look at the .PDF file I posted above?
The whole purpose is to log all the dimensions and then determine what the mating dimensions need to be after you account for the clearances you want at the front of the bolt lugs and the bolt nose.
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