Have you adjusted your trigger?
I have a 308 Survivor that currently shoots 1'' groups at 100 yards. The trigger is pretty stiff. Both my 308 and BC max out my RCBS pull gauge at 72oz and it takes substantially more pull after that to get the hammer to fall. I estimate 6.5-7.5 lbs.
I plan on adjusting the trigger tomorrow following instructions from the FAQ thread.