I got the shown round and have some questions.
The case is made of aluminium (others I know have a brass case). Except the headstamp are no markings on it.
The model no. of the case is XM193B1E (see headstamp pic). So I think XM193 is the model of the original (brass?) case, B1 the first change of material (aluminium) and E meant the experimental status of the aluminium case.
Can somebody confirm this?
Another question: my one is called “drill round”, but there are no according markings on it. One of two drills I know has a “DUMMY” headstamp and a piece of rubber instead a primer, the other is stencilled with “DUMMY” on the projectile and a screw instead of a primer.
So I don’t really believe, that my one is a drill round, maybe some kind of “handout-dummy”? Note that there is no crimp!
And again: Can somebody confirm this and has comparable rounds?
Every information is welcome. Especially drawings, pics or documents …
Thanks a lot.