As I know I think pips setting as SL is depend on your strategy and your trading style as for how long you are continue the trade, if you are a long trade then your goal is to make big pips for the trade and your SL may be 100 pips above that time and take profit also more then SL. but as a short trade you think for your SL 20-50 scale. so friend it is not specific to set your STOP LOSS as our comment.