I would use a 286 or 300gr aframe (Both shoot well in my Chapuis) and a CEB or Northfork soild. Just make sure you put the first shot in the boiler room.
That appears to look just as good as the old Hornady round nosed steel jacketed FMJ solids from the 1950s-1960s and from the 1980s-1992.You need enough impact velocity for these modern expansion bullets, which is not always guaranteed with this marginal cartridges.
In the end you have to use with such cartridges as in the past thin-walled SP bullets for plain game and FMJ for the bigger dangerous game, although the FMJ bullets, depending on the manufacturer, were of very different quality. The cartridges 9,3x74R I used were from the sixties because DWM had stopped manufacturing them in 1972. The FMJ bullets of this firm but did not have a bad reputation when hunting Big Game.
A caliber 9,3mm 19g FMJ bullets from one of the buffalos.
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A friend has taken 2 buffalo and recently 2 brown bear with his 9.3x62. I think it's light for elephant and I wouldn't use 375 on elephant either. It works but I just like more bullet than that. I think elephants should have .40 caliber if not .45 caliber to get faster results.