Kynoch Industrial blanks


#1

On the Kynoch website (http://www.kynochammunition.co.uk/), under their industrial applications section, there is this photo:

It simply says “Industrial Blanks” and nothing more. What calibre are those, and what tool uses them?


#2

Considering the super replies on the RF blanks given recently, perhaps it is time to move this BTT.
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