centershot
Silver $$ Contributor
Was stationed at D-M from '67 to '70. As I now live in Tucson, have been to the bone yard many times. Still quite a few of them sitting there even after the drone program. Your example looks like an early "d". There were d's at Mountain Home when I was there for a while as well as rf's. If you need any .300 H & H brass, I have a lot of Winchester.