Hi Roy
Is this the one?
http://www.youtube.com/watch?v=k4FCV...eature=related
It’s Dave Gullo (owner of Buffalo Arms) shooting past 1000yds I think. As you said about 400yds, I’m not sure if it’s the same link that you want. You may also enjoy Kenny Wasserburgher's 1 mile shoots. The links should be there in youtube.
ATB,
Krish