unknown 20mm projectile

[earni74]

I borrowed this from a friend i visited to get this projectile identified,hopefully, it was tight in a 20x102 vulcan case, the fuze is threaded internally but no internals, as you can see there are two crimping grooves,there is a hole that goes all the way through. about 10mm in diameter, at the base is a cavity that could take a push in tracer
Ther are 6 slots on the projectile and there are no markings at all anywhere, comments pleaseIMG-20220516-WA0020.jpgIMG-20220516-WA0019.jpgIMG-20220516-WA0018.jpgIMG-20220516-WA0017.jpg

[earni74]

extra photo

[earni74]

Anyone any thoughts about this projectile

[ammogun]

hello
i see "similars" cut for reduced range projectiles but on these the cuts are in "oblique" (penched)

but your fuze look real (internal threads for the mechanism)

[earni74]

Hi ammogun, reduced range i agree, it's which case does it belong to that escapes me
thanks

[Grzesio]

hello
i see "similars" cut for reduced range projectiles but on these the cuts are in "oblique" (penched)

I'd say, it's a kind of a drill projectile?
Longitudinal grooves look similar to those present on drill rifle rounds, and the hole down the body prevents the projectile from being accidentally fired.

[ammogun]

hello
your projectile is strange
three crimping grooves ?
the fuze look real due to internal thead (not dummy fuze)
the hole in rear can be used for self destruct by the tracer
but these "grooves" on the projectile ?

[earni74]

ammogun, only 2 crimping grooves, the bottom (lip) is very thin and could cut into the case if crimped

[womble]

Mick
Looks like a short range proj, please see attached pic of a different one I have, this has a steel sleeve in side the plastic coating. cheers wombleDSC_0773.jpg

[earni74]

Hi Mike, that one is similar, this one i have has a sintered iron D band, with two crimping grooves, its certainly a short range round, the fuze has no I.D on it but threaded on the inside, so i reckon that is not correct, it came in a Vulcan 20x102mm with single crimp groove, now, i know the French did a 20mm Vulcan with a double crimp, but the neck on this case is not long enough for a double crimp, i have done a close-up of the projectile (which i should have done in the first place)