I think this may be a foreign cartridge (found in Mississippi USA). I am finding VERY little online, so I think it might be rare. Any ideas? Possibly Swiss with the cross on it?
"Rare" would be pretty relative as the arsenal churned out thousands at a time. But it closed in 2001. Unfired it would be worth 50¢. In that shape - ?
Maybe "uncommon" is a better word! Does that date it any? Trying to piece together a time line of the area it was found. And what it may have been used for in the past!
7.62x51 NATO...(known as .308 Win. in the states for civilian use).....as stated it is Portugese.
Roughly 15 years ago this was coming into the country for CHEAP, when many countries switched from that into 5.56x45 platform battlerifles.
I was buying it by the 1000 rd case, filled with five 200 rd vinyl "battlepacks" for less than 18 cents a round to feed a collection of FN-FAL's....those were the days. Probably went thru 20,000 rds of that stuff.
Once the surplus from Germany (DAG), England (RG) and Portugal dried up, so did shooting the FAL's!