I think your information is incorrect. Last time I checked an L-300 was a C-141 and I'm pretty sure Mesa never flew them, so the only way to earn that type would be through the USAF. After doing a search in the FAA database, I came up with this:

CRAIG ALAN MOFFATT
Date of Issue: 6/13/2010
Certificate: AIRLINE TRANSPORT PILOT Print
Ratings:
AIRLINE TRANSPORT PILOT
AIRPLANE SINGLE ENGINE LAND
AIRPLANE MULTIENGINE LAND

Type Ratings:
A/CL-604 A/DC-9 A/ERJ-170 A/ERJ-190 A/L-300

Limits:
ENGLISH PROFICIENT.
DC-9 ERJ-170 ERJ-190 CIRC. APCH. - VMC ONLY.
ERJ-170 ERJ-190 SIC PRIVILEGES ONLY.

Happy Hunting