G'Day Fella's,

9.3 x 64, a word of advice with regard to your sizing die!
I measured the bore of my .404 Jeff (Douglas Prem)and found it to have a groove diameter of 0.4248"!!!

I then machined up a sizing die of the appropriate diameter (I think it was 0.4258"?) to suit this bore, and my RCBS lube/sizer!

Hope that helps

Doh!
Homer