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10/20/2017 1:01:18 AM
9/22/2017 12:11:25 AM
Posted: 8/7/2005 1:41:27 PM EDT
I've got a Dillon .223 headspace gauge. Is this ok for checking my bulk packaged commercially reloaded mil-spec 5.56 ammo? Thx
Link Posted: 8/7/2005 4:30:45 PM EDT
[Last Edit: 8/8/2005 1:02:59 AM EDT by repub18]
Headspace guages dont check ammo. It is used to determine headspace in the bolt and barrel extenstion, and it is better to use a USGI 5.56 field guage to check headspace in an AR15.

ETA, yes if it is a case headspace guage it is ok to use on a .223 round.
Link Posted: 8/7/2005 5:10:36 PM EDT
If this is a case not a chamber headspace gage then yes you can check loaded 5.56mm rounds. The differences between .223 and 5.56mm are in the chamber so the 5.56mm cartridge can be loaded to a higher pressure.

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