My chronograph says RL-15 gives the highest velocity by about a 100 FPS over anything else I have tried..I get 2520 FPS with a 286 gr. Nosler and 2400 FPS plus a tad with the 320 gr. Woodleigh. I shoot 10 take out the high and low and average the remaining 8....
I will also advise that IMO the 270 gr. Speer is the worst bullet I have ever use in the 9.3x62, it is just too soft and comes apart on about anything..
