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“It's fairly easy to control sized case headspace” SAAMI does not list case head space. SAAMI list the case as having a length that is measured from the datum/shoulder to the head of the case. SAAMI does list the chamber as having ‘head space’.
I dug back in time to 1958, glossary of terms, head space, no mention of a case having head space. Now? I notice the statement “some people call the distance/length of the case from the shoulder/datum to the head of the case head space” I noticed L.E. Wilson named their case gage CASE GAGE, a gage built so well most reloaders can not appreciate it for its accuracy. Then there are comparators, also referred to as head space gages, The up side? If a reloader is lead to believe a comparator is a head space gage and the comparator is listed as a head space gage getting their money should be easy. Why?
F. Guffey
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