My brother received a new Browning BAR 308 Heavy BBL. (It is a beast)
He was shooting with a variety of "hunting" ammo (Unfortunately I do not know which) and was getting lots of popped primers. Why?
It has always been my understanding that popped primers are usually from a tight chamber (that needs reaming), but I have recently read that it could also be short throat, short shoulder of chamber, ....
Could it be bullet weight (too heavy or long)?
I would have guessed the BAR would be a little loose in the chamber for reliability reasons and being a hunting rifle designed to handle longer, heavier bullets as well.