Experimental 30MM Projectile - PATEC

I recently purchased a nice assortment of experimental 25MM, 30MM, 35MM and 40MM INERT items. The only information I have on them is that they were made by PATEC. Figured I would post some pics in case others may be interested in seeing them. If anyone has any information about them I would love to learn it.


Here are the 30MM Projectile Pics.