depends on what your shooting with it. neither are terribly lightweight or cheap to load for much less buy loaded ammo for.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
For an urban environment, the 5.56X45, 5.45X39 or the 7.62X39 would be far superior to a .338 or a .50.
The nation that will insist on drawing a broad line of demarcation between the fighting man and the thinking man is liable to find its fighting done by fools and its thinking done by cowards.