I load for the 460WBY.
I use Barnes X 500gr. and 500gr. Solid.
Still haven't done anything with 600gr. Barnes O bullets yet but will over there summer.
we should download the .460 a bit.
Be VERY careful down loading this critter. You can and will blow yourself up if you go to far (more so than other catridges) PLEASE PLEASE use GREAT CATION when you down load for this cartridge.
Also something to note. If you plan on hunting DG at close ranges 100 yards and in using the Barnes X , or Swift A Frames keep muzzle velocity below or at 2400fps.
I spent allot of phone time talking to tecks at both places. These bullets aren't meant to give MAXIUME penetration expansion above 2400fps at the ranges mentioned above.
If you didn't know the 460WBY can shove a 500gr. bullet at 2650fps.(thatÂ’s book call out)
If you have any question PM me. I have done allot of research and spent way more money than my wife cares to talk about on load development on this particular cartridge.
I have load data for 300gr-500gr. bullets for the 460WBY in a Weatherby Mark V Deluxe.
Warf