I don't see why 600+ yards would matter much, but could see how advances in armor at closer ranges might necessitate evolution in ammunition.
Ok fair enough.
Founder Ancient Order of the 1895 Winchester
"Come, shall we go and kill us venison? And yet it irks me the poor dappled fools, Being native burghers of this desert city, Should in their own confines with forked heads Have their round haunches gored."
