For reasons I don't recall I thought i'd try 320 grainers in my Austrian Voere 9.3x64. It's best load with 286 gr barnes bullets is 66 gr RL 15- consistent 1 1/4 at 2540fps. Now there is no published data for 320 grainers(that I could find), so I extrapolated down from my data. With 286 gr 67 gr of RL 15 is no problem. So I loaded 320 gr woodleighs with 61-65 gr of 15:

61gr- 2303,2398,2398 1" gr (not bad)
63gr- 2370, 2351,2347 2" (less vel. than 61?)
64gr- 2400+ 2+"
65 gr- one shot 3189fps! def pressure sign ( circular brass mark). At this point I thanked my lucky stars, pulled the bullets, and resolved to stick to the nosler recipes for reloading. Comments? Paul in az

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