in the past, i have seen the nosler bt do the same thing. i am not a fan of "destructive" bullets. i like to "eat up to the hole". in my mind, bloodshot meat is wasted meat.
you have learned what a cast hp will do at 1750fps. you will like it and keep hunting with it or hate it and go to another type of boolit(fn, lfn, wfn....). don't put too much faith on hyper velocity. i have a 500 linebaugh in tc encore with a 24" MGM barrel that uses a 460gr lfn gc and its only going 1200+fps. i still have hunt with it and i don't care about velocity of the boolit. what i do care about is the leakage of blood that the boolit does.