I suspect that we are again agreeing but not using the same definitions. I would bet a 100 dollar bill that if you asked the BR guys they would say something like
"Yeah, I FL resize but only set the shoulder back .001" or less"
which is what I tried to define PFLR as. I doubt they will be sizing so much to lose the "bookending" quality that tlk mentioned, but they will call it "Full Length Resizing".
As far as adjusting the die, let me quote from the RCBS instructions for a regular FL die
"Screw the full length sizer die into the press until the die touches the shell holder when the shell holder is brought up to the top of the press stroke. Be sure all play is removed from the press leverage system. To do at this, adjust the die as above, lower the shell holder AND SET THE DIE 1/8 TO 1/4 TURN FURTHER DOWN so the press cams over center. Set the large lock nut and you're ready to size."
For their Competition Dies it says the same thing, as it also does for their Gold Medal Dies instruction sheets.
I don't have the instruction for any other FL dies and don't use them myself. For me it is always a Lee Collet/Redding Body Die or a Redding Bushing Neck Sizer/Redding Body Die.
I have created false shoulders before and monitor springback continuously with pin gauges. Also push the shoulder back .0005" to .0015" for a very slight crush fit (bookending).
As far as springback on necks, I have 4 tight necked custom chamber guns and measure the outside diameter of the fired necks and have always gotten .001" or less springback
338RUM - once fired outside neck .365"
twice fired outside neck .3655"
three time fired outside neck .366"
280AI - once fired outside neck .312"
twice fired outside neck .3125"
three times fired outside neck .313"
6.5 rem mag - once fired outside neck .262"
twice fired outside neck .2625"
three times fired outside neck .263"
But this is off topic.
For me it "Bookend 'em and send 'em downrange!"