SMA PLT WAS INTERCEPTED BY A MILITARY ACFT AFTER HE FLEW INTO TFR PROHIBITED AIRSPACE.

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I WAS FLYING VFR IN GOOD WX CONDITIONS ON A CROSS COUNTRY FLT FROM ZZZ TO ZZZ1 IN A PRIVATE ACFT. I WAS GOING MORE OR LESS DIRECT; AT 2000 FT MSL; BUT DEVIATION AROUND RESTR AIRSPACE AND WASHINGTON DULLES CLASS B. I THOUGHT I PLOTTED A COURSE AROUND P40; BUT EVIDENTLY ENTERED THE EXTENDED BOUNDARY (AS AMENDED BY NOTAM POST 9/TUE/01. I LEARNED THIS WHEN MILITARY JET FLEW UP NEXT TO ME AT WHICH TIME I IMMEDIATELY TRIED TO REACH HIM ON 121.5. UNABLE TO CONTACT JET; I QUICKLY CONTACTED ZZZ2 TWR WHO INSTRUCTED ME TO LAND (WHICH I DID; OBVIOUSLY). I WAS AWARE OF P40 AND THOUGHT I AVOIDED IT. UNFORTUNATELY; I WAS BUSY PLOTTING MY COURSE; PLANNING A FUEL STOP; DETERMINING MINIMUM SAFE ALTITUDE TO CROSS IMPENDING BLUE RIDGE MOUNTAINS; AND THINK THAT THE STRONG WINDS ALOFT PUSHED ME OFF COURSE AND INTO THE RESTR AIRSPACE. MORE CAREFUL FLT PLANNING; MORE CONSERVATIVE COURSE PLOTTING (WIDE BERTH AROUND RESTR AREAS); AND MORE VIGILANCE IN FLT SHOULD PREVENT THIS FROM HAPPENING AGAIN. I SINCERELY REGRET THIS INCIDENT.