Originally Posted by dragman
Shooting cost the winner the - 300RUM! hands down the cheapest of those to shoot.
Power - 30-378 (BUT Unless your building a custom rig that has over a 26" barrel it only slightly edges the RUM IMHO)
Accuracy - I have to give it to the RUM also (not saying the others aren't accurate) the 300 RUM is an easy gun to make shoot and there is so much loading data out there
I think of the 3 the RUM is the easy winner at least for me.
Although I've never owned a RUM, I agree the .300 RUM is a hard round to beat. The only strong negative would be the risk that you couldn't buy ammunition on an African hunt.
That said, I believe I would jump to a .338 if I was considering anything with the case capacity of the RUM or .30-378. Either the .338 RUM or the .338-.378 Weatherby are phenomenal rounds that do more justice to the case capacity.