I just purchased a Rock 6.5 5R SS 1/8 twist M24 contour barrel. I'm seriously looking at the 260 Rem for the role of knocking off mule deer out to a 1,100 yards. I own both 260 and 6.5x284 in sporter weight's so this heavier rifle will fit a longer reach role. I love the 6.5x284 but am very concerned about throat wear, I could chase it or I could just go 260 rem or the AI version for brass life not so much mv. Will the 140 Berger VLD whack em' good at that distance using a 260? Would I gain that much advantage going with the 284 case? I could load it down a bit..?? What are your thoughts on this?