Seeking empirical evidence to support or refute powder/seating-depth nodes

[bigngreen]

If you hang out at accurate shooter there are a lot of well known long range competitors there. From what I can tell they all tune at 600 as a minimum. Was listening to Alex Wheeler on Cortinas podcast. He tunes his hunting rifles at 600 his target guns at 1000. Vertical is the big thing for distance. Your not going to see anything at 100 yds. You might have a nice 100 yd group that the vertical goes to hell at 600 plus. For us mortals that might mean once you settle on an initial load tune at the max distance you plan to shoot.

Alex is one of the best, worked with him a lot, he lived a couple blocks away before bailing on Mt!
He doesn't have any sacred cows, if it doesn't produce accuracy it doesn't stay. If you want imperical processes he's as close as you can get IMO.