In my two 7mm RM rifles (25 and 26 ic 9.5 twist) I used Norma Brass, Norma MRP or H1000 with 168 gr Berger and they trottle in 3050 to 3100 fps range with a very small e/s with CCI primer.
some other shooters seem to prefer Retumbo or RE 25.
At very long range berger bullet give me outstanding results on game since three years. I use 7mm RM since 12 years now and it's a real screamer with "magnum handloads" not like with commercial pussy cat load.
You can find handloads table on "the best of the west" forum from berger to develop your load :
Re:168 VLD VS 168 VLD ( Hunting Bullets) - The Best of the West
Using Berger bullet, put 7mm RM in a new "size" even if it was top contender before.