Metric choke numbers on a Spanish gun?
I have an Armas Erbi 12ga sxs in the safe. I was trying to figure out what the chokes are. I don't have a bore gage to check. The barrels are stamped "Choke" with numbers below that. One barrel has 17,3 and then 18,2 below that. The other says 17,9 with 18,2 below.
What do those numbers mean?
|