12.7x99mm NATO?


A 2009 arms catalog by Fabrique National, USA makes reference to the 12.7x99mm NATO cartridge. Having never seen a .50 Browning cartridge case with a NATO “cross in circle” in the headstamp, I assumed it was not a NATO standard caliber. Is it? Is FN in error?



It is standard, a past issue of the IAA Journal had some details on the topic.

Generally, though, the nato insignia doesn’t appear in the majority of headstamps. There are some known though. Again, that issue of the journal had examples.