Gee I'm sorry, I thought I asked a legitimate question about the ladder test and repeatibility. Apparently not. Now if you guys will excuse me I'm going to go buy some more factory ammo while rcamuglia walks on water out to his 600 yard target.
It's a good question but indicates your inexperience with long range shooting. If you can't hold on a 2" dot at 600 with a solid bench rest and squeeze the trigger without moving, then the long range Audette won't work for you. Stick to 100 yard development
I usually drive to the target at 600. Another thing you'll learn with some more experience.
LOL.