This 6.5 x 54mm dummy has made it to the top of a box of mixed military cartridges I have been making my way through off and on for some time now. Rather than a primer, it has a rubbery material in the primer pocket. The bullet is loose enough to be removed, revealing that it is filled with sand.
case length 2.102"
overall length 2.7585
I believe this is a 6.5 x 53.5 Greek Mannlicher Schoenauer, but it was developed around 1900, the 1898 date seems a little early. Any input would be appreciated.