I did make it to the range today. I had a few rounds made with with 4064 and 286 gr. Hornady. It was pointed out to me several times these bullet was too stout for this level of performance. The pickings were slim looking for 9.3 bullets. I took what I could find. I have had good help and support from members of this and one other forum getting these old rifles shooting.
My load was 44grns of IMR 4064 in reformed PPU 8mm brass. The rifle remained regulated with excellent accuracy potential. This rifle could be taken hunting today without further work. Loads for this round appear to be mild. I did have protruding primers. I will necksize this brass. In the meantime, the hunt is on for more 8mm brass. These old guns are a winner. I am still considering fire forming brass with cream of wheat and pistol powder. I also working on the idea of forming 9.3 from 06 cases.
The FN based rifle went back with the gunsmith. We had some to go on that rifle before it was right.
Added: Gunsmith was zeroing in a Christensen Arms 280 Nosler with Swarovski 5-25x52 Scope for a customer. Different price level toys?