PCT DEP CTLR NOT HAPPY WITH THE WAY A B757 CREW WAS MAKING TURNS.

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WE ENCOUNTERED SEVERAL INTERESTING COMMENTS FROM POTOMAC APCH CTL DEPARTING DCA. WE WERE LOCATED APPROX 10-15 MI ESE OF BUFFR INTXN WHEN WE WERE TOLD TO TURN R TO 330 DEGS; THEN R TO 340 DEGS; THEN DIRECT TO BUFFR. SHORTLY THEREAFTER; THE CTLR TOLD US TO TURN R TO 060 DEGS FOR DC9 TFC; A 90 DEG TURN. THE DC9 TFC EVENTUALLY APPEARED TO US FLYING FROM R TO L AT A LOWER ALT. UPON CLRING TFC; THE CTLR TOLD US TO TURN L TO 280 DEGS. WE INITIATED A TURN TO 280 DEGS AT 307 KTS; 15-20 DEGS OF BANK (USING AUTOBANK MODE WITH AUTOPLT ON) AT 17000 FT MSL; A 140 DEG TURN. ON 3 SUBSEQUENT XMISSIONS; THE CTLR REPEATED THE TURN CLRNC AND WE REPEATED THE SAME IN RESPONSE. AS WE TURNED DURING THE EXCHANGE; THE CTLR COMMENTED THAT HIS RADAR SHOWED NO TURN EVEN THOUGH WE WERE CLRLY TURNING AND WE HAD TURNED 60-90 DEGS ALREADY DURING THIS DISCUSSION. HE ALSO INFORMED US THAT OUR TURN WAS 'DEPLORABLE.' HE THEN CLRED US PRESENT POS DIRECT TO MCRAY INTXN AND SWITCHED US TO ANOTHER FREQ. DURING THE COMMENTS BACK AND FORTH BTWN US; THE CTLR WAS HAVING ADDITIONAL DIFFICULTY WITH 2 OTHER ACFT AND THEIR TURN PROGRESS/PROC. AT NO TIME WERE WE ADDRESSED AS TO INCREASING A RATE OF TURN BEYOND NORMAL TO ASSIST AS NECESSARY; BUT ONLY THAT THE RADAR 'DOES NOT LIE' IMPUTE; IMPLYING THAT WE WERE NOT IN THE TURN AS CLRED BY THE CTLR CONCERNING OUR NORMAL RATE OF TURN. I AM AT A LOSS OF WORDS AS TO HOW THE CTLR HANDLED; OR RATHER MISHANDLED; THIS SIT. WE COULD HAVE HELPED OR ASSISTED AS NEEDED IF SUCH WAS REQUESTED; BUT ANOTHER TACK WAS CHOSEN ON THE PART OF THE CTLR AND THE OPPORTUNITY FOR BETTER COM WAS CLOSED.