So here's my question/problem, I have a redding bushing that I have been using for a few years that belongs to a friend. I decided to order my own set and was measuring my new lapua brass to make sure I get the right ones. The loaded brass is .337 OD, the bushing is a .334. so I decide to check some empty brass and find that the OD is .331. After checking a large sample I measured the ID of the bushing and it was .330. I called my friend and he checked his and they were all .003 under what the stamped size. So what gives. How does this add up.