I'm all for threat analysis. That's why I would still carry a .357 and bear gas, even in grizzly country, rather than a rifle or nothing.
Face it. I'm not going to haul a .454 anywhere, but I will carry my colt. I'm also not carrying a rifle. but, on the very slim chance that a threat materializes, I'll take an obviously marginal weapon, and count on my luck improving.
I feel the same way out in public. I don't worry too much about being attacked in a chinese restaurant, but I do worry about road ragers. So, the pistol goes in the cars, but not necessarily into public. If I lived elsewhere, I'd obviously re-analyze my threats and my responses.
but seriously, I'm not sure that the 500 will outpenetrate the whelen.
whelen has an sd of 279 2500 fps, the
magnum has an sd of 251 at 1700.
I don't know if the added weight will give deeper penetration or not, but all things considered, I still think they can both give a lethal wound.
That magnum is practically identical to the old 50-70-450 round that would have been used on buffalo.