Totally agree with you Phil,
Watched a fellow double one of Cal’s .450 No2 SxS rifle’s, by “strumming” the triggers during recoil, at a local rifle range many years back.
So with rifles, I always carried my soft in the left barrel / rear trigger, presuming my first shot would call for the soft nose bullet.
For buffalo, I always presume a solid is almost never preferred for the first shot.
(Seems like solids are becoming less popular in general for Buffalo these days anyway).
I’ve only taken one buffalo but it was with a left and a right / a soft and a solid.
There was little to no chance of my bumping the second trigger during recoil from the first barrel.
I however have taken multiple non-dangerous animals with two different double rifles over the Safaris I’ve been blessed with.
Hypothetically, I can see where a solid might be preferred on a very small critter, to save the meat for eating and / or the skin for taxidermy.
However, such is presumably not the typical opportunity, compared to most chances at non-dangerous game.
Cheers,
Paul.