I am a recent convert to this group of cartridges. Mostly due to the high praise they received from my PH and some friends a moose camp. But, no sooner have I sipped the Kool-aide then I read this disparagement of 300 magnums http://www.chuckhawks.com/optimum_30_rifle_cartridge.htm Ugh, way to harsh my mellow! But seriously, why do guys who like this class of cartridge like it? Is it worth the effort?