Hey there, 

As per your query I would like to tell you tell you that according to your rank and based upon the previous year cuttoff marks, the minimum marks required for getting admission in best private medical college is 357-400 marks in tamil nadu. 

As per year the cuttoff marks varies depending upon the number the number of students appearing in the exam and the difficulty level of exam papers. Keep this point in the mind. 

Predict your rank and know the chances of getting admission in private medical college. Click upon the link mentioned below :

https://www.google.com/url?sa=t&source=web&rct=j&url=https://medicine.careers360.com/articles/neet-cutoff-tamil-nadu/amp&ved=2ahUKEwjEq6j5vKPjAhUBA3IKHT06CwEQFjAEegQIAhAB&usg=AOvVaw0N9se7bUWSotbYCUSKb2E9&ampcf=1. 

Hopefully it's will be useful to you. 

GOOD LUCK.