JJ I personally think 400 grains is about the perfect weight in any speed for archery.
I myself shoot 417.? grains (I know what your saying, .?) yeah, I weigh all my arrows and broadheads to the tenth of a grain = anal...I know.
Anyway I shoot at 299-300 fps, never had a problem with blowthrough with any broadhead and would use this combo for any game I encountered with the exception of Africa big 5 and NA Grizzly.
