Within 400 yds. the 300mag isn't in the same class as the 338 ,you give up too much mass and that little increase in volicity doesn't come close to making it up. Pull your head out of the sand and do some math. One of my speer manuals states that the 338 is so close to the 375hh as to overlap in preformance. that cannot be said for the 300. I'm not taking anything from the 300 it's a great round,but use your math it's not in the same league as the 338, so stop putting it down. You dont understand that of which you speak.