At the house I have about 100 yards to play with and a back stop, at where I shoot I have about 2500 yards to play with but its a little bit of a drive. what I'm getting at is for less intensive load development, (for now) because of time available is it safe to say the load with the lowest SD and ES will be the most accurate at longer ranges. I would not always think so but would like to hear everyone's input. Loading for a 338 EDGE AI 300 SMK's planning on starting at 90.0 gr of H-1000 and working my way up. I know i could shoot groups at 100yd but I would like to see how it groups further out, although it may do well at 100 this does not always mean the same for extended ranges, although I will check out groups at 100 also.