bullthrower,
you are a man of good taste and great intuition.
given a chance, the 9.3 x 64 will give you good service and a lot of interesting fun.
you will find that most 9.3 bullets are meant for the lower velocities of the x62 and x74, and as such are more suited to smaller game.
this includes the nosler partition.
with h4350 you can get 2600 at less than max with 286 gn swift, and 2500 similarly with lighter than max pressures with the swift 300 gn.
these are powerful loads that are as effective on medium sized game as bigger species.
check out the point blank distance for +/- 3" with the 286 gn load.
it is useable to 300 yds where you will have to aim 9 - 10" high, and still fast enough to get bullet expansion at that range.
the 250 gn barnes and the 250 gn nosler accubond will do different jobs while overlapping and shooting quite flat.
I have tried re15, as it looks good on paper, but it has a very sudden appearance of high pressure, and could not give the velocities of h4350.
destroying cases with over pressure can be expensive in this chambering.
h4350 will need some compression, but if you work up it is a non issue.
re15 might be more suited to 235 and 250 gn bullets than heavier.
max loads with the 270 gn speer exhibited almost explosive results, suggesting use on whitetails and average pigs.
the 286 gn barnes would be nice, to try, but is just too long to get enough h4350 in the case.
I have often wondered how re17 and re16 would go in this case.
375 h@h ballistics in a 30/06 length action - what more could you ask for.
good luck,
bruce.