Just a thought... I wonder if the black powder and muzzle loader generations thought the same thing about the newfangled smokless powder and cartridge ad campaign? Was it just heavy advertising that sucked us in? Seriously, a .50 cal muzzle loader kills a deer just as dead as anything else.
Or... are most cartridges that were concieved after about 1906 just beyond the point of diminishing returns?
I dunno, I don't feel too strongly and wouldn't kick up dust with anybody on this one, I likes em all - old and new.