here are nifty retracements from 2012 and 2016 point of view
Just see the chart on weekly time frame. if nothing negative come from market then it has potential to go for 34 Rs target. Short term target 1 is 16 rs . target 2 is 20 rs. Target 3 is 27 and then 30 and then 34
AS YOU CAN SEE THERE IS A GREAT SUPPORT NEAR 68 TO 70 RS. CHANNEL SUPPORT AND FIBONACCI SUPPORT IS ALSO THERE . LAST TIME SUPPORT IS ALSO THERE. TARGET RATIO IS ALSO VERY GOOD
As you can see fibonacci extension support is near the cmp and last critical support is also near. if there is a bounce back then you can get the target money easily. RSI is also in Oversold Zone