06-14-2018, 03:27 PM
Fellow Horde Members and Vile Unwashed, I have a favor to ask.
I'm working on an improved 6.5 Grendel bolt that restores the standard 0.125 boltface depth with its slightly improved strength AND restores extractor strength — sort of a 65G Holy Grail — but also want to give a nod to 7.62x39 shooters.
SAAMI spec says 7.62x39 case rim is 0.447, but manufacturers may not actually make brass to that dimension.
Can any of you guys who have a pile of 7.62x39 brass and/or steel cases lying around get out your calipers and give me actual average dimensions of your case rim sizes from various manufacturers?
Thanks much in advance!
I'm working on an improved 6.5 Grendel bolt that restores the standard 0.125 boltface depth with its slightly improved strength AND restores extractor strength — sort of a 65G Holy Grail — but also want to give a nod to 7.62x39 shooters.
SAAMI spec says 7.62x39 case rim is 0.447, but manufacturers may not actually make brass to that dimension.
Can any of you guys who have a pile of 7.62x39 brass and/or steel cases lying around get out your calipers and give me actual average dimensions of your case rim sizes from various manufacturers?
Thanks much in advance!
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:: I Drank the Water :: Revelation 21:6 ::
:: I Drank the Water :: Revelation 21:6 ::