JIMRO, I am sorry I misinterpreted your post, I failed to see the 0-500 meter caveat as most ballistics charts I've seen rarely take either cartridge past 400 yards . however I would like to point out that military training doctrine states that if the target is beyond the maximum accepted range of iron sights(300 meters), generally you turn things over to the guy with a scope and bigger round anyway. there is no reason to look for a round that is more lethal past acceptable firing ranges in the first place but then again I have seen more taxpayer dollars spent in worse ways.
all guns lost in a tragic smelting accident.
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