weird question, a buddy of mine collects different types of ammo and has them on display at his house, he has over a hundred different kinds, and the other day we were talking about the biggest round he has. It was one of the nitro express rounds...but he said he wanted to get a 4 bore round for the display. I know this stuff is rare as heck and probably really expensive, but is there someplace you can buy a bullet or two on the internet??