That is a lot of downloading for a 338 mag! It would even be below a lot of the starting loads for the 338-06.I've found downloading a 210 gr to 2500fps to be a very effective deer round.
I think if you try the Barnes (all copper) TTSX bullets you will find the "four pedal mushroom" results in a lot less hamburger than a full mushroom lead core bullet.
A lot of the damage is from bullet disintegration, which the copper bullets generally don't do (even at the higher speeds).