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Old December 23, 2019, 08:53 AM   #145
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Join Date: March 2, 2014
Posts: 9,222
Did a little more "sleuthing" this morning.

Since it may be a very long time before I get my headspace gauges made, I decided to go to my "fall back" and make my own improvised no-go gauge. It ain't pretty, by works.

True to specs, I got the bolt to close up to just under 1.720; and at or above it would not. Nonetheless, .01 slack in headspace in an AR is "enormous" compared to what I've worked with before in any other AR cartridge--most of the trim-to case lengths I've seen for the 350L are around 1.701

Notice the odd scoring on the brass on removal from chamber. This was virgin starline brass on a freshly cleaned chamber.

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If you’re ever hiking in the woods and you get lost, just look up and find the brightest star in the sky and you’ll know which way space is.
I am NOT an expert--I do not have any formal experience or certification in firearms use or testing; use any information I post at your own risk!
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