In The Classroom: Headspace Part 3

Dunlapby Bob Dunlap and Ken BrookskenBrooks
AGI Instructors and Master Gunsmiths

In Parts 1 and 2 (look under the Authors tab above for Bob Dunlap if you missed them) Bob explained what headspace is, and how to accurately measure it. Now, in this video, he and his partner Ken Brooks give a great demonstration of the effects of too much headspace and why, under the right circumstances it can be an annoyance if not dangerous. Looks like they had a lot of fun making this video as well.


2 Responses to In The Classroom: Headspace Part 3

    • Robert,

      The pressure that the ammo is loaded to and the amount of headspace will combined to determine how fast the case head separation occurs. There is no hard and fast rule because quality and thickness of brass is also variable.

      In my 35 plus years of Gunsmithing and Reloading I would say the a 30-06 loaded to normal for caliber pressures with .008″ to .009″ headspace would probably show noticeable stretching and possibly a partial head separation at about three loadings.

      Hope that helps.

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