STEEP BANK AFTER TKOF CONSIDERED EXCESSIVE BY LCL FSDO OFFICER.

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JUST PRIOR TO TKOF ON RWY 23 FOR MY FLT FROM DSM TO STP; I RECEIVED A TKOF CLRNC FROM TWR WHICH WAS; CLRED FOR TKOF RWY 23; R TURN HDG 360 DEGS; DIRECT MASON CITY WHEN ABLE.' SHORTLY AFTER LIFTOFF; TWR REQUESTED ME TO BEGIN MY TURN 'ASAP.' I; THEREFORE; IMMEDIATELY ROLLED INTO A STANDARD BANK TO THE R; CONTINUED TO CLB AT VY; AND ROLLED OUT ON A HDG OF 360 DEGS. THE TWR THEN THANKED ME FOR MY HELP AND ADVISED ME TO CONTACT THE DEP CTLR. THIS WAS A VERY STANDARD; VERY ROUTINE OCCURRENCE IN THE TYPE OF FLYING PROFESSION I AM INVOLVED IN. THE FOLLOWING EVENING UPON ARR TO DSM ON THE SAME RTE; THE TWR OPERATOR ASKED ME TO CALL HIM. WHEN I DID; HE APOLOGETICALLY TOLD ME THAT A LCL FSDO PERSON OBSERVED MY DEP EARLIER THAT MORNING AND SAID THAT I 'TURNED TOO QUICKLY.' APPARENTLY HE WAS AWARE THAT THE CTLR ADVISED ME TO TURN QUICKLY; BUT FOR SOME REASON THOUGHT IT REQUIRED THE NOTIFICATION OF MY COMPANY'S CHIEF PLT. MY UNDERSTANDING IS THAT NO FAA ACTION IS INTENDED; BUT IF QUICK AND TIMELY ADHERENCE TO AN ATC CTLR'S REQUEST IS GNDS FOR A VERBAL REPRIMAND FROM THE FAA; I THOUGHT I HAD BETTER MAKE A RPT TO YOU SO THAT SAFETY MAY BE IMPROVED. I APOLOGIZE FOR TAKING UP YOUR TIME WITH A RPT THAT OFFERS; IN MY OPINION; LITTLE THAT CAN BENEFIT OTHERS. MY ONLY THOUGHTS ARE THAT PERHAPS WHEN LIGHTLY LOADED AND CLBING A VY IN A TURN; WHEN VIEWED FROM THE GND ON THE INSIDE OF A TURN A CESSNA 310 MAY APPEAR TO BE BANKED MORE STEEPLY THAN IT ACTUALLY IS. MY OTHER THOUGHT IS THAT A QUICK TURN WHEN LESS THAN 500 FT AGL MAY SEEM UNSAFE. THE LATTER I AGREE COULD BE A PROB; BUT I WAS FLYING OVER THE RWY COMPLEX; AN ENVIRONMENT FREE OF OBSTACLES; AND I DETERMINED THAT IT WOULD BE IN THE BEST INTEREST OF SAFETY TO ASSIST ATC AS BEST I COULD. I REALIZE THAT THE ENFORCEMENT DIVISION OF THE FAA IS A VERY NECESSARY CHK AND BAL FOR AVIATORS; BUT FOR SERIOUS SAFETY-CONSCIOUS PLTS IT IS OCCURRENCES LIKE THESE THAT GIVE US UNNEEDED STRESS AND EXTRA GRAY HAIR FOR THE BENEFIT OF NO ONE. THANK YOU FOR YOUR TIME.