What powder does norma use for the 460 weatherby?

Any suggestions for loads with 500 gr. round nose bullets..

They would inevitably use Norma 203-B or Norma 204 depending on bullet weight.

Ken....

From Hodgdon No. 25 Manual (circa 1986)

460 Wby - FREEBORED - 26" bbl
All MAX LOADS

126.o gr H4831 - 2,470 fps
128.o gr H450 - 2,578 fps
115.o gr H4350 - 2,508 fps
116.o gr H414 - 2,530 fps
108.o gr H380 - 2,483 fps
105.o gr H4895 - 2,478 fps

The main thing is you need LOTS OF POWDER!

There's also some IMR and W powder data.

I also note that this site ARF, has 460 data:

http://www.accuratereloading.com/460wmag.html