View Full Version : Primer Piercing and Primer Blanking
rdog52
09-07-2015, 01:26 PM
What is a pierced primer? What is a blanked primer? Please educate me!
LongRange
09-07-2015, 01:43 PM
a blanked primer is when you get a small circle around the outside edge firing pin detent in the primer...looks like a small circle etched in the primer around where the pin hit it...usually from the firing pin hole being to big or woren...a pierced primer is where the firing pin puts a hole through the primer cup instead of just the detent.
rdog52
09-08-2015, 12:04 AM
Thanks, LongRange.
earl39
09-08-2015, 12:43 AM
According to SAAMI
PRIMER, PIERCED
A fired primer which has been perforated by the firing-pin.
PRIMER, BLANKED
A fired primer cup in which the firing-pin indent has been punched out by internal gas pressure.
PRIMER CRATERING
A circumferential rearward flow of metal surrounding the indentation of a firing-pin in a fired primer cup.
You can find it all here http://www.saami.org/glossary/display.cfm?letter=P
rdog52
09-08-2015, 08:25 AM
Thanks for the detail and the link, earl39.
Randy
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