Hello, 

As per your requirement, i would say that as you have got 300 marks in neet exam, you may or may not get a seat for bds in Bangalore. 

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

The cut off as per your caste would also depend on which state domicile you have as few states havr higher cut off even for st caste. So it varies from state to state.

As you have a reservation of your category, you can avail its benefits and you may get a seat but you must participate in the counseling process.

Even you can apply for any private medical college for your course. 

Depending on your caste, reservation of no. Of seats are there. So if you only have few spcefic reservation, you will get your seat as the cut off remains normally 500 approx.

Good luck