9.3x57 Powder Reccomndations

47 grns of Hodgdon Hornady LEVERevolution is getting about 2030 fps, though I don't know if that powder is too high of a pressure. I'll get some IMR 3031 and H4350 coming from Midway and I'll see how those work
 
Interestingly QLs standard projection for LVR is 2035 using a 286 rws bullet, and 38kpsi.
Using a Nosler Partition your at about 40kpsi and 2088.
The specific bullet and coal make a difference as dose case capacity, but i can say LVR is a decent option.

Taking an educated guess at your cartridge specs i THINK h4350 will run out of capacity before reaching velocity.
Your 3031 should be in the 2100 range at 39-41gr. Think pressure will be in the low 40kpsi range
 
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