Reading reviews from some of those who were involved in testing as well as a few others, RDF's don't seem to be as sensitive to seating depth as other bullets. I'm still waiting on a couple of items, but will soon be loading for my new 6.5. I think I'm going to start with RDF's.
I just did a ladder and then 5 groups of different seating depth in a 223ai with rdfs. I found they shot notably better with a kiss.