the primer is electric ?
The primer was a piston primer like the kind used in the XM645 flechette. Also neat is how similar the links are.
There was a fantastic board at the Woodin Lab that also showed a multiple flechette and HE loads.
Paul, do you happen to know the case length of these 25mm?
Alex, the case length is 145 mm. My collection of unconventional cannon rounds is here:
From left to right: 20x87 caseless, 20x171 Dardick Tround, 20x140 Cased-Telescoped, 25x145 neckless part-polymer case, 25x152 Cased-Telescoped Combustible case for GAU-7 aircraft gun (with projectile alongside), 30x166 AMCAWS tapered CT, 30x152 Hughes Lockless, 30x200 Folded
Tony, thanks a lot! And also thanks for the arrangement of weird designs!