Weird Cartridge

[PAHOGHUNTER]

This cartridge is just over 1 1/2 inches long, the I.D. at the neck is approx. 7.35mm & has a very unsual rim. Stamped on the head, if I am reading it correctly, is RVA8-157 MK2A4 3-54. The brass is very heavy, any ideas what this is?
http://i92.photobucket.com/albums/l6/rldar/rva8.jpg
http://i92.photobucket.com/albums/l6/rldar/rva81.jpg

 

[deadin]

Looks like an artillery or naval gun shell primer.

Dean

 

[44 AMP]

Primer

quite possibly. I once found a round that was about the size of a 12ga, with a slight neck. It was filled with a very coarse powder. Was told it was a primer for artillery using bagged charges, not cased ammo. Yours could very well be something similar. With all the different nations guns over the last century and a half, it might be rather difficult to ID it exactly.

 

[Mike Irwin]

Primer. DEFINITELY.

The M2A4 is for use in the Mk 114 series howizters only.

The tube contained 19 grains of coarse black powder.

Check this out for more information:

http://www.fas.org/man/dod-101/sys/land/docs/GC02AA.html

 

[PAHOGHUNTER]

Primer

Thank you guys very much, it sure looked like a cartridge.