519 marks are actually good to ensure a seat in a good government college as you also, mentioned that you belong to OBC category that is also a favouring factor here and aiming to take a college in Maharashtra. Also, I'd say the probability is very high that you'll take a seat ,just wait for your call in the college ,you're aiming to take admission in. And, many many congratulations.

Hello,
If I consider the previous year data .Then you have good chances of getting admission in any of the government colleges in maharashtra through state quota .You can get the following colleges.
Gondia Government Medical College 475 marks
Chandrapur Government Medical College 480
Indira Gandhi Medical College, Nagpur 510
Browse the link given below for detailed information. About more such colleges
http://www.medicine.careers360.com/articles/neet-cutoff-maharashtra/amp

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