400 yds is not far to a good shooter 1 m.o.a at 400 is only 4in thats alot of room to play with and a 300wsm is a straight shootin bullet. But it would help if he had a picture of were he shot from. Like have his girlfriend go stand were he shot from and him standing behind the bear. Because you know the first thing someone is going to say is bullsh*t 400yds unless they know how good of a shot you have. The terrain that he's in at 400yds with a straight shot is unlikely because stumps are taller than the bear and to many factor's.If it was a 400yd shot nice job man..