In this FN Mauser .270,I'm using 59.8 grs of RL-26,Federal 210 Match primer and a 150 gr Nosler Partition. Getting 3010 fps from the 22" barrel.
I never got 3000 fps w/150s in a 270 BUT
I did get -2950, so I doubt it's worth the effort.
Good job to you Ken.
Jerry