I have a compitition seating die , the RCBS Standard F/L Sizer. When I tried the S type bushing dies they at first seemed tighter then most, Redding advised me to use a little more lube, Even on the standard F/L die . I use Imperial sizing wax,I apply with my fingers first the case body & what ever is left on my fingers one turn on the neck. But first I add wax to a Q-tip, run it around the inside of the necks. Your cases are cleaned before you size, sorry I had to ask. Sounds like your serious into accuracy, try wrapping 0000 steel wool around the sharpend end of a pencil break the led tip off,run the wrapped wool on the inside of the neck, clean out any dust. Your bullet will seat with very little resistance. If your not loading large quantities, taking time with your case prep will give you accurate trouble free reloads.