Yup, out of the 15-20 310s in the fleet at the time I think 223 was my favorite as well. A good, tough old ship. The bird strike thing I mentioned was kinda nasty, happened late night enroute OMA-DSM, 7000 ft. I hit 4-5 big birds, probably geese. Took 2 in the horizontal stab, one each side, smashed the leading edges back to the spar; one in the right spinner, mangled the spinner and had cooked, stinky bird lodged back on the cylinders; one hit the right wing just out from the nacelle, also pushed the leading edge back to the spar. Needless to say she was done for the night... but patched up and back in action a few weeks later.
It's kinda funny to me how I miss haulin' the mail in the old 310 and buzzing around the western US in the mighty Beech. No money, but fun times.
