Hi

It's quite difficult to make  prediction as  cut off marks/rank for medical colleges depends upon various factors like  number of students that appeared in the exam, kind of marks obtained by them , toughness level of the examination etc.

But when we go through previous data then it suggests that with 268 marks your chances for Government Medical College is very low even if you are from SC category

You may have chances in private medical college and deemed universities which you can check at:

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

It gives you a personalized report with top college in which you have chances for admission , with the help of predicted colleges you can make better choice while filling your choices of colleges during your counselling

Thankyou