I also found this 1944 evaluation by Dalhgren Naval Proving Ground of captured 20mm Japanese ammunition. It is another small download.
Keep goin Daniel, thanks!
It would make sense to add the on-line editions of these publications to the IAA Bibliography, with a link to their location. With the ongoing efforts by various parties to convert printed texts to digital format available on line, collectors may have a whole reference library at their keyboard tips-- probably many years away. Meanwhile, it would be good to start adding these to the Bibliography as they come to people’s attention.
Hope the bibliography keepers see this- I only post what they send me for the site.