I checked the Speer manual with that bullet and they show 3.280 which seems unusual that two manuals show OAL longer than your SAAMI chamber. I would triple check your measurement just to be sure and load accordingly. Also since you are seating deeper most definitely do not start at Max!
"Anyone taking up handloading necessarily plays with unknown factors and takes chances. But so does anyone who drives a car,goes to a cocktail party,eats in a restaurant,or gets married."
Jack O'Connor 1963