I am putting this here as I am not sure if Thorns MOD Deadwood is working correctly. Using Shooting range Center stall or third stall to the right or third stall to the left.
My thorn is +5 with a +10 Extended Mutator, Screen shot is of my equipment if others wish to try testing.
Using Deadwood with my current gear I can fire Three Magazines of 44 rounds by the time Deadwood runs its timer.
Using Deadwood, Firing Non stop allowing the end of the mod to set off explosion did a total of = 9,504
Using Deadwood, Manually triggering explosion after every reload did a total of - 17,413
Not using Deadwood MOD, just firing three magazines gave me a total damage of -14,200
So, with this, I am suggesting that "Reactivating the Mod or Reloading will trigger Empowered Blowback" could be a simple fix for the moment. Until strange reason why shooting all the needles for three magazines straight causing so little damage, be it a coding/bug issue.
I have also heard many comment that the overall damage of the gun compared to many others is lackluster due to auto targeting making weakspot hitting very difficult. Maybe an increase to the base Explosive damage may remedy this issue as well.