The Firing Line Forums - View Single Post - Primer deformation... What am I seeing here?

mete · July 14, 2012, 02:37 PM

Many variables !
Crimped cases are usually military. Military primers are also harder and thicker .
Primer hardness , thickness, cartridge pressure , bolt face [chamfered firing pin hole]. Chamber dimensions change pressures especially very long military bullets in a 5.56 chamber may cause excessive pressure fired in a 223 chamber .Yes the two are different.
Checking all those variables will give you the whole story.

July 14, 2012, 02:37 PM	#2
mete Senior Member Join Date: June 14, 2004 Location: NY State Posts: 6,575	Many variables ! Crimped cases are usually military. Military primers are also harder and thicker . Primer hardness , thickness, cartridge pressure , bolt face [chamfered firing pin hole]. Chamber dimensions change pressures especially very long military bullets in a 5.56 chamber may cause excessive pressure fired in a 223 chamber .Yes the two are different. Checking all those variables will give you the whole story. __________________ And Watson , bring your revolver !