looking for dies ,brass , loaded ammo and information on reloading

HDS had a set in stock just before Christmas.

Gemini, You can buy dies from RCBS or Huntingtons. You can neck up 460 Wby. brass to make 510 Wells cases. Reloading data is hard to come by for this cartridge. You can use 500 A2 data since these cartridges are nearly identical. Start with a 500 A2 starting load and reduce it a few grains to be on the safe side.

Loads listed in an April 2001 Shooting Times article by Jamison were:
102 grains of IMR 3031 behind a 600 grain Barnes solid yeilding 2391 fps

107 grains of 3031 behind a 570 gr. XLC for 2454 fps

These were both out of a 22 inch barrel.