Today I learned once again that the right targets are the closing or opening price of the prior swing high or low and not the extreme high or low points when we are in a "trading range" not in expansion mode.
Its much more likely to get filled at those price levels +-10 ticks than on the extreme points.
If there was no prior swing high and we are making higher lows then obviously the 138,20%, 150% , 161,80% or 200% Extension can be used.