Wayne1,
If anyone else has said this already, please disregard an old geezer's cane tapping and mumbling over here by the fireplace.
Unlike the North American deer family (Alaska-Yukon moose to Florida Keys deer), with most of (not all) Africa's game animals, dangerous or not so much, when they are broadside or quartering slightly toward you....the shoulder shot IS the heart lung shot.
And the broadside shot through the rib cage is pretty much a gut shot.
Do not go hunting in Africa without reading Kevin "Doctari" Robertson's superb book: "The Perfect Shot" (Safari Press Publishing).
Likewise he has a DVD out of the same title (they might be sold as a package these days, not sure).
"I spent most of my money on Mausers, European optiks and hunting safaris, the rest I just wasted."
Best regards,
Velo Dog.