"Any straight wall case" would be ones that you would use for deer sized game, just as bottleneck cases would be the same...The ones you use to hunt with.
Tradmark, thanks for your definition of "marginal."
My point was, a bad shot is a bad shot, regardless of straight wall or bottleneck cartridges one would use for game.
I have seen animals go quite a ways with both lungs blown out while others go down quickly, and others between the two.
I would not have considered a double lung shot marginal.
When I hunted in SC, the owner of the property wanted me to double shoulder shoot all deer for the expressed purpose of not having to track them in heavy cover.
Totally agree with this: "It all boils down to placement and the correct bullet."