1) 79.5 grs of H-4350,Rem 9-1/2 mag,300 gr Sierra GK.
2) 76.5 grs IMR-4350,Rem 9-1/2 mag,260 gr Nosler Partition.
Have you tried H-4350 with the 300gr Partition?
I have. Shoots good. Am only using 75 gr of H4350 with the 300's. Usually results in about 2550 fps and good accuracy. Haven't used the 300 gr Partition on game yet. I don't know why it wouldn't work...
