For Government jobs, the certificate relating to caste issued by the competent Government authority is accepted. The caste indicated in the College records has no significance. So, when you will apply for Government jobs, you are required to submit the copy of caste certificate (declaring you an OBC) from the District Magistrate (DM) or Sub-Divisional Judicial Magistrate (SDJM) of your locality. No other certificate will be accepted for that purpose.
However, I will advise you to submit a copy of caste certificate issued by DM/SDJM to your college authorities also for availing various other facilities (like scholarship, fee concession, etc.) applicable for OBCs.
Come as you are!