With an All India Rank of 3,01,116 in NEET, getting admission into ESIC Medical College, Gulbarga is highly unlikely, especially under the General category. Here's why:

The cutoff for General category in ESIC Gulbarga usually closes around 54,000–65,000 AIR under the All India Quota (AIQ).

Even under the ESIC Insured Person (IP) quota, the cutoffs for General/OBC are often below 1.5 lakh rank.

Your rank is significantly higher than these cutoffs, so chances in regular or ESIC quota are very low.