I have not done much long range Shooting or hunting. My longest shot is 425 yrds with a standard hunting rifle , with hand loads. I am waiting on Glen Seekin to finish my rail mount for my Blaser.I am putting together a 7 mm STW 26" barrel and am using Richards 150 ULD RBBT bullets that if I am correct figure out at about 760 BC. Now my questions are , do Weighing cases, Turning necks, specific Primers, brand of cases ect matter . I see this on the net all over shooters talking about all this helps in acuracy. I see things like jumping the Lands and seating out to the Lands. Are these thing that one needs to do as trial and error to see what works best or all of the above. Like most others I would like the rifle to shoot as best it can and then I will try to do my part. I would like to take Shawns Corse but I am not ready equipment wise yet.