180gr Berger VLD seating depth for 7PRC

[CobraCharmer]

Hi all,
I am planning on running a spicy OCW test with some 180gr Berger VLD Hunting Bullets. Using 71.1 grains of Retumbo as my max load and loaded all my rounds with a 0.020 jump.

Once I isolate my charge weight and decide to screw around with my seating depth, what do y'all recommend? Do the rounds like to jump? If so, what kind of max jump would you recommend I seat them to?

Here is my setup for the OCW test for those of you that are curious.

 

[whatwind?]

Jam 20 or jump a lot and 71 grains seems a little high