Hello, 

As per your requirement, i would say that considering previous year data .Then you have good chances of getting admission in any of the government colleges in tamil nadu through state quota .you have really scored a good decent marks for admission into a good government medical college as you have scored 520 in neet.

Getting a seat in government medical college is depending on many factors like studenrs to seat ratio, cut off, reservation etc. 

You can get the following colleges under your category reservation.

• Stanley Medical College
• Madurai Medical College, Madurai
• Thanjavur Medical College, Thanjavur, etc. 

Browse the link given below for detailed information about some more which you can get http://www.medicine.careers360.com/articles/neet-cutoff-tamil-nadu/amp
Good luck