I was looking for Sierra GameKing 170 grain bullets for my Marlin 336Y, and came across two boxes of the Hornady FTX 160 grain. I have those on the way, and proven load data would be appreciated.
I have success with Hodgdon "CFE223" and "LVR" powder. The CFE edged out LVR in accuracy. I'm sure any of the standard as there so many powders often used in the 30-30 would provide the accuracy you desire yet likely "LVR" will be the fastest.