Really wanna get flustered with wording? Try to properly ask someone behind a gun counter what cartridge a particular rifle is chambered for...... (palm to forehead)
I did that the other day with a Marlin with pretty good looking wood. He told me it was a Marlin. I said "I know that. What is it chambered for?" He looked at the tag and said "308 Winchester." I said "OK. It's a 308 MX. Please don't tell anyone else it's a 308 Win. There's a huge difference."
