Re: 300 RUM rebarrel
b1g_bOre, at short range 300yds and in, terminal performance. Medium range, 300-600yds, terminal performance, and wind drift, long range, past 600yds, terminal performance, wind drift, and drop. Using your example at 400yds, with a 300 yard zero, MV of 4000fps for the 125gr, and 3000fps for a 220gr MK, there is a difference of 2.8in, favoring the 125gr. Its up to you if that 2.8in of drop is worth what your losing, in regards to performance. [img]images/icons/wink.gif[/img] YMMV.