I've shot a few whitetails with a .223 and .22-250, one of my favorite bullets if it shoots well is the 60 grain Nosler partition, I suspect the 64 grain bonded solid base they offer would be very nearly as good but haven't played with it yet. After that some cup and cores that have worked for me are the 64 grain winchester Power Point, 65 grain Gameking, and 55 grain Hornady SP with cannelure and sierra gameking. If you shooting factory the Federal fusions have done well for me both in accuracy and performance. I can't comment on the 75 grain bullets but the Barnes TSX or TTSX are certainly not a bad choice I have yet to play with them.
For your 8mm I'd be inclined to use the 150 grain Hornady interlock or 170 SST, I do not know if the Nosler Ballistic tip is meant for the faster 8's or if the original would give good performance on deer. Perhaps another poster will know.