Factory best load and best handload is the new Nosler factory load with 225 Partition @ 2800 and loads for same in the newest Nosler manual. There is a .35 Whelen web site if you google it.
9.3, I have two Whelen's, a CDL and a 7600. They shoot everything but 225gr NP's
I've tried R12/15, W748, BLC-2, and IMR4895, and a couple different primers.
Any suggestions?