In reply to:

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If I was looking for an ideal calibre for gemsbok it definitely wouldn't be a .375 OR a 6.5x57. I think a decent flat shooting calibre such as a .300 Mag with 180 gr projectiles would be about ideal. I've never seen a wild gemsbok up close.

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I've shot various PG with a 300Wby (although not Gemsbok, which I shot with a .375H&H) and was not very impressed with the cartridge. Which is why I later sold it.
Of the various Gemsbok that I have seen in the true wilderness of Kaokoveld and Damaraland in Namibia, quite a few would have been a least easier to shot with a flatter shooting cartridge than say a 30-06 (or 375H&H). This was in open areas with little or no cover. And far from any population save a few Himba families here and there. But, then most Gemsbok hunting in Namibia is done in areas where shots aren't so long, and thus a regular .308 or 30-06 or simular should be fine IMO. In fact, my old mother shot a Gemsbok with her .308 with no problems. Shot placement is what counts!

Erik

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