Due to the fact that these pipes are usually owned by GHB players who tend to be a bit heavy on the bag I have changed and recategorised my reed strengths.
I would suggest that the weak and medium are best for bellows and the medium and strong are best for mouth blown.
The strong reeds are just a little weaker than my weak GHB chanter reeds.
 
Reed Strength Chart below
 
 
Inches Water
Mbar
Weak
    14-16
34-40
Medium
    16-18
40-45
Strong
    19-21
47-52