View Single Post
Old April 10, 2012, 10:14 AM   #43
BDS-THR
Senior Member
 
Join Date: June 12, 2010
Posts: 479
The Rifleman's Journal has a detailed article on headspace:
Quote:
Setting the headspace on a resized case is important to ensure reliable functioning of the rifle, avoid damage to the rifle, maximize case life and achieve consistent accuracy. The objective of this article is to show you a method of setting up a full length resizing die that allows you to quickly adjust its setting to achieve the desired amount of shoulder set-back (headspace) for a number of rifles chambered for the same cartridge or for different lots of brass.

"Headspace" in the context of the rifle chambered for a rimless cartridge is actually the distance from the bolt face to the point in the chamber that is halfway up the shoulder. In the reloading context we often use the term to indicate how much clearance have we built into the brass case as compared to that distance. Simply stated, if the headspace measurement on a resized piece of brass is 0.002" less than the chamber headspace of the rifle in which it was fired, we often say the brass has 0.002" headspace. That's not a technically correct use of the term, but it will do for most reloading purposes.

More at link - http://riflemansjournal.blogspot.com...headspace.html
Related article "Short headspace on new brass" - http://riflemansjournal.blogspot.com...new-brass.html
BDS-THR is offline  
 
Page generated in 0.04866 seconds with 8 queries