One can enter at CMP or above 815 or wait for 825 to enter for unstoppable upside move. RR could be anything from 1:3 to 1:10 with SL of 800 for entry between 815 to 818 and SL of 814 for entry above 825.
Enter above 825 with SL of 820 for the target of 835/850/870. Keep trailing SL on every 10 points.
Note: I am not a SEBI register and view is only for educational purpose as well as personal, always consult your financial advisor before investing or trading.