This may have been up before, but I just read this little piece now. Final report from Watertown arsenal lab. on ballistic on the M1 helmets. Basically shooting a 1911 at various m1 helmets and see what is does. Final report is from 30 Jan 1945.
But what caught my eye was page 31 & 33. Page 31 lists McCord lot no just short of 1400, but look at page 33, 1400-1500-1600 numbers!!! This is Jan 1945!!
Very interesting if you ask me!
Here is the link https://apps.dtic.mil/dtic/tr/fulltext/u2/a954941.pdf
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