Here, in Europa we use RWS or Brenneke TUG/UNI for very large game like Attila Boar Turkey [293 grs, 2428fps] Evo [290grs, 2395fps], very closed to .375H&H, Norma from 231 to 285 grs , GECO (owner RWS) 255grs-2559fps, Sako, Sologne and Hornady, Federal.
Longtime ago I was owner of an 9.3x64...