From 16914 wave (c or iii) is in progress and from current high 17638 there is a possibility of one retracement towards 17467-17361. But one should not look for selling for that support range because its against the wave (iii) trend so safe strategy is to buy when it comes in the support range for the target of 300-495 points. If Nifty trades below 17361 then only negative so SL for buying should be 17361 on 30min candle closing basis.