7×64mm
7×64mm is a rifle cartridge or ammunition model.
In detail
7×64mm is a rifle cartridge or ammunition model.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“7×64mm”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q270071: 7×64mm
Consult the source