Is the bushveld the same as lowveld? I see I will probably be hunting bushveld. I am going to assume that is brush?
From pictures I have seen it looks like there is some brush as previously mentioned. So knowing this will the 300 h&H, 270 WBY (300 WBY) or something else be the better choice. I know many say take one rifle but I have the oppurtunity to build a second rifle for the trip so I am going to take advantage of it even if it doesn't get used I would rather have it and not need it.
The Lowveld is a general loation, like in Montana you might say you're going hunting in The Bitter Root Valley.
And The Lowveld hunting conditions are bushveld, something like we might say in N. America "hardwood forest and brushy" conditions.
So, yes it is brush (and plenty of thorn trees that look a bit like small oaks), but there are so many animals there that they have made trails criss-crossing everywhere.
If you are half way careful, you can walk all day on these trails, in short pants and not get scratched up much if at all.
If there is a river where you're going, it will be almost jungle (not quite but thick) along the banks.
Unusual to shoot very far in The Lowveld, average for my 3 times there have been about 75 yds.
Longest Lowveld shot for me was 200 yds, across a canyon for a Klipspringer that was standing on a boulder (.375 H&H and 300 gr bullet @ 2400 fps).
Next longest was a warthog at 150, across a dry pan (dry pond), same caliber/load.
However, those were unusual circumstances for there and they were on the same safari.
Hasn't happened in two other safaris in the Lowveld.
Fact is, 200 yds is my longest shot in The Highveld as well (very open grassland, AKA "prairie" conditions.)
So, screeching velocity and small caliber pointy/boat tail bullets are the last thing I would want there.
In your .375 I would not go under 270 grain and in your .30 I would not go under 180 grain.
And I prefer heavier in both those but that is just me and how I think, not from any law or rule book.
Your PH is really the one to listen to, not necessarily some worn out old geezer who is suspicious of new fangled products until they've been around a few years to prove themselves (or not) plenty well.
I will say it again...You're gonna flip when you see Africa.