I worked up some dummy loads. The bullet is a Nosler Accubond 180gr.
The longer bullet is the theoretical maximum length. Essentially .308" buried in the case.
The shorter bullet is the theoretical minimum length. It's loaded to fit a standard long action magazine well of 3.40 and is loaded to a max length of 3.385.
Both bullets have the ogive marked. If both bullets were placed on a flat level surface the distance between the two ogive marks is the amount of throat play I have to work with.
I attached some pictures so folks could see what I'm talking about.
Anyone care to provide a reasoning as to where I should set the OAL with respect to ogive?