Well, what's in a name. Plenty I guess in this particular area.
The number and basic types of cartridges presently being produced is not overstated. The design of the metallic cartridge has remained the same since about 1866.
Ie: Case, charge, primer and projectile.
Cartridge casings (fired) have been of most particular assistance in tracking the flow of the Battle of the Little Big Horn.
Musket 'spatter' (deflected or grounded) have proven equal assitance in analyzing the ebb and flow of battlefields of the English and American Civil War-more so in former War because fewer sites have been buried by unbridled development.
Russian Gun control efforrts, to some extent, have been flanked by men with metal detectors who sweep the vast battlefields of WWII in Russia.
An astonishing numeber of firearms have been unearthed and restored.
Many arms have been found in cosmoline and cased where supply train routes became instantly obsolete by swift changes in the flow of the various fronts.
The present extent of such "diggers" is unknown to me.
I suppose placing signs reading "Acttung-minen" might discourage some newbies.