BEECH JET 400 FO OVERSHOT RWY HOLD SHORT LINE DURING TAXI IN RESULTING IN NO COMMENT FROM TWR CTLR; OR KNOWN CONFLICT. THE RWY WAS NOT BEING USED FOR TKOFS OR LNDGS; BUT ONLY TAXI.

Narrative

WE HAD JUST LANDED RWY 33L AT BOS. TWR INSTRUCTED US TO EXIT THE RWY ONTO TXWY Q AND TO CONTACT GND CTL. WE EXITED ONTO TXWY Q AND SWITCHED TO GND CTL FREQ. THE FREQ WAS VERY CONGESTED AS WE STOPPED WELL BEFORE RWY 4L/22R ON TXWY Q. HOWEVER; WHERE I STOPPED WAS SLIGHTLY PAST THE HOLD SHORT LINE. WE REMAINED STOPPED HERE AND WAITED FOR A BREAK IN THE XMISSION CONGESTION TO CONTACT GND FOR FURTHER INSTRUCTIONS TO THE RAMP. JUST AS WE WERE ABOUT TO CONTACT GND CTL; GND CTL CONTACTED US AND TOLD US TO PASS BEHIND AN AIRLINER TAXIING ON RWY 4L/22R; AND TAXI TO THE RAMP VIA TXWY K. TO THE BEST OF MY RECOLLECTION RWY 4L/22R WAS NOT BEING USED FOR LNDGS OR DEPS. IT WAS BEING USED ONLY FOR TAXI. THAT IS IT. THERE WAS NO INCIDENT OR INCURSION; OR ANY MENTION FROM GND CTL THAT I WAS SLIGHTLY PAST THE HOLD SHORT LINE. AFTER ALL; I STOPPED AND REMAINED WELL SHORT OF THE RWY 4L/22R; AND A RWY THAT WASN'T BEING USED FOR DEPS OR TKOFS. IN SUMMARY; I SHOULD HAVE BEEN MORE CAUTIOUS AND STOPPED BEFORE THE HOLD SHORT LINE; NOT SLIGHTLY PAST IT.