.577 Snider
.577 Snider is a rifle cartridge or ammunition model.
In detail
The record gives 1867 as its date of establishment or first appearance.
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
“.577 Snider”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q4545401: .577 Snider
Consult the source