I really like the RL22 in my 7Mag. I tried Retumbo and got very spastic results both in speed and accuracy. My favorite all around powder is IMR 4064 as I use it in the '06, 7 and 8mm Mausers.
I think we have to be careful here and not mix apples and oranges. The 1000 yard guys are intent on punching holes in paper as close together as possible. On the other hand, hunters are intent on punching holes in animals with as fast and large a round designed for expansion and weight retention as possible.
What interests me is that 98% of the boys at Camp Perry are shooting the Sierra Match King bullets....a flat based bullet by the way. For me, I like the Nosler BT's and the Game King/Pro Hunters for my deer and Elk loads. Attached is my latest effort with the 7Mag.