Hi aspirant,

As you know different colleges have different cutoff marks. With 300 plus marks you have chance to get seat in management quota in some colleges of Tamilnadu if you belong to DNC catagory. You can refer the link to know which college you may get with your marks.

https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer

Hope this helps you. Best of luck.