CE501 FLT CREW MISINTERPS THEIR CLRNC RESULTING IN A COURSE DEV AND A MISCOM WITH ATC.

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PRIOR TO DEPARTING CNO; MY COPLT AND I PICKED UP THE FOLLOWING CLRNC FROM CHINO GND. 'YOU ARE CLRED TO LAS VEGAS; MAINTAIN RWY HDG 260 DEGS FOR RADAR VECTORS TO POM VOR 295 DEG RADIAL; RADAR VECTORS TO DAGGETT; THEN DIRECT CLB TO 4000 FT; EXPECT FL230 10 MINS AFTER DEP; SQUAWK TO BE ASSIGNED BY THE TWR.' AFTER TAXI WE CHKED IN WITH THE TWR AND WERE INFORMED THAT THERE WAS AN AMENDMENT TO THE CLRNC. MY COPLT READ BACK THE AMENDMENT; WHICH INCLUDED THE KEPEC 1 ARR INTO LAS. WHILE HOLDING SHORT; I DISCUSSED THIS CLRNC WITH THE COPLT AND THOUGHT IT ODD TO RECEIVE 2 RADAR VECTORS IN THE CLRNC AND A 295 DEG RADIAL TO NOWHERE; AS THERE WAS NO FIX AFTER THE 295 DEG RADIAL. WE DISCUSSED WHAT WE BELIEVED TO BE THE CLRNC; WHICH WAS -- WE'LL RECEIVE RADAR VECTORS TO DAG FOR THE KEPEC 1 ARR INTO LAS. WE DEPARTED WITHOUT INCIDENT. WHILE CONTINUING OUR CLB; SOCAL CLRED US DIRECT TO POM. WE WERE THEN HANDED OFF (AGAIN TO SOCAL) AND TOLD TO CLB TO 7000 FT; CROSS POM AT 7000 FT AND CLRED TO 14000 FT. UPON REACHING POM; WE HADN'T HEARD FROM SOCAL; SO I HAD MY COPLT QUERY SOCAL AS TO WHAT THEY WANTED US TO DO. IT SHOULD HAVE BEEN CLR TO SOCAL THAT THERE WAS SOME CONFUSION. WE ASKED IF WE WERE ON RADAR VECTORS TO DAG. SOCAL DID NOT RESPOND TO OUR QUESTIONS; INSTEAD THEY HANDED US OFF TO ZLA. INSTEAD OF HELPING WITH THE APPARENT CONFUSION WE WERE TURNED OVER TO ANOTHER CTLR. AFTER CHKING IN WITH ZLA MY COPLT TOLD THEM WE WERE GOING DIRECT TO DAG. WE WERE ASKED IF WE HAD RECEIVED THE CLRNC 'DIRECT DAG.' WE RESPONDED BY TELLING THEM THAT WE HAD ASKED THE PREVIOUS CTLR 'WHAT WAS OUR RADAR VECTOR?' BUT RATHER THAN RESPOND THEY TURNED US OVER TO ZLA. ZLA ASKED IF WE HAD THE TERRAIN IN SIGHT; WHICH WE RESPONDED 'YES' AND THAT 'WE WERE EXPEDITING OUR CLB.' WE WERE THEN CLRED TO FL230 AND DIRECT DAG. THE REST OF THE FLT WAS UNEVENTFUL. AT NO TIME DURING THIS FLT WAS WX A CONTRIBUTING FACTOR. BEFORE REACHING THE POM VOR IT BECAME CLR TO ME AND THE COPLT THAT WE HAD TO GO EITHER L OR R OF OUR CURRENT HDG; WHICH WAS DIRECTLY INTO THE MOUNTAIN RANGE NEAR ONTARIO. THAT IS WHY I ASKED THE COPLT TO QUERY SOCAL AS TO WHAT THEY EXPECTED US TO DO. WE DID NOT RECEIVE ANY FURTHER EXPLANATION FROM SOCAL OTHER THAN CONTACT ZLA; AT WHICH TIME WE INFORMED ZLA WE WERE HEADING TO DAG. AFTER RECEIVING INSTRUCTIONS TO CALL TRACON ON THE LANDLINE; IT WAS APPARENT THAT THEY EXPECTED US TO HEAD OUTBOUND ON THE POM 295 DEG RADIAL. THE INDIVIDUAL AT TRACON ASKED IF THE WORDS 'OUTBOUND' ON THE POM 295 DEG RADIAL WERE GIVEN IN THE CLRNC; WHICH WE RESPONDED 'NO.' AT NO TIME WERE THE WORDS 'OUTBOUND' GIVEN EITHER BY SOCAL OR THE CLRNC GIVEN BY CHINO GND. HAD 'OUTBOUND' BEEN GIVEN; THERE WOULD HAVE BEEN NO CONFUSION.