I've been playing with the 9.3 since 1999 and I have never gotten an accurate load with a 286gr bullet out of my rifle at over 2355fps. The same load will shoot 2450 out of a friends identical CZ. I've never worried about it because everything I ever shot was graveyard dead with one shot. Nosler partitions and Barnes TSX are both very accurate and are my "Go to" bullets. I use only the 286gr in the rifle because it is my "big game rifle" for the USA.
You don't need smoking velocities to wreak havoc with this cartridge.