I'm currently awaiting a 9.3 x 64 Brenneke from my gunsmith, built on a 98 action. I've been putting together some loads for it, and in doing research, I've found that some loads list pressures that would give a 96 action some serious trouble. Not saying that it can't be done, but if you're going to do it, then I would suggest going with an action in which the round could be used to its full potential. Just my 2 cents.
Erik.