I did a seating depth test with a Kimber Montana in 22-250 using Berger Flat Base Target 52gn bullets. (Unrelated to seating depth but noted on the graph - I was using Lapua brass, which was giving me clickers). This is with 2-shot groups, so the results are little rough, but both group size and ES show a cyclic relationship with seating depth.


[Linked Image from photos.smugmug.com]