I have used 180 grain Nosler partitions in 300 Win Mag, and 200 grain Nosler Partitions in 308 Norma and 300H&H, and 220 grain Partitions in 300 Weatherby.
No problems with any of them. All 1 shot kills and all with exits. I no longer own most of those rifles, but I still have my Mauser in 300H&H and I use the 200 grain bullets in it with perfect results. It's the onluy 300 mag I kept. No complaints with any of them however.