Well I was able to go out today and try out 500yds (actually 507.5). This is the first time I have ever shot this far. I am shooting a Weatherby Vanguard .308 and I was shooting hornady SST 165gr. factory ammo. After shooting I have a couple of questions. My first two shots hit the target with a 3.358 spread. My third shot was a reload ( I just started reloading) I missed, windage was good but it hit about two feet low. I am reloading .308 with hornday SST 165gr. and IMR 4895 with winchester brass and federal 210 primers. Does anybody have any good recipes using the 165 gr SST? Also how much difference does it make shooting from a very hot barrel to a cold barrel. I zeroed my rifle in 42 degrees today it was 78 degrees. I could also feel alot of heat on the barrel. Thanks for any input.