Hello aspirant, 

As per your category bc a and rank,chances are low as the last cutoff rank for your category in OU is around 750 as per previous trends

Stil you can apply for it,but chances are minimal

You  can go for JNTU H , KU WARANGAL,TELEGANA UNIVERSITY NIZAMABAD

Here are the list of colleges you may get seat 

• Anurag Group of Institutes
• Geethanjali College of Engg & Tech
• Institute of Aeronautical Engineering
• Sri Indu Institute of Engg and Technology
• KU College of Women
• Mahatma Gandhi University College of Commerce & BusinessMethodist College of Engineering & Technology
• Malla Reddy Engineering College
• Nizam College of Self Finance

GOOD LUCK