This appears to be the Krieg melee calculation. I thought you might want to put it in your Community guide since people continue to misrepresent how it works ( so did I, briefly… )
My testing this evening has revealed Krieg’s damage equation for melee strikes.
Krieg has the same base melee damage as all other vault hunters. It follows this equation :
Base = 20 * 1.13^Level
Krieg gets a percentage melee damage bonus based on his level. It follows this equation :
KriegBonus = ( 1.6% * Level ) -20%
It reaches 50% at level 44. At 61, it’s 77.6%. This bonus doesn’t apply when using a weapon with a bayonet. It works differently than a bayonet however, as it’s applied to his Base Melee BEFORE roid is taken into account. The same is true for Buzzaxe Rampage.
If no bayonet while not in Buzzaxe Rampage :
(( Base * (1 + KriegBonus)) + Roid ) * ( 1 + sum of melee bonuses from skills )
With bayonet while not in Buzzaxe Rampage :
( Base + Roid ) * ( 1 + Bayonet ) * ( 1 + sum of melee bonuses from skills )
Buzzaxe Rampage ( bayoneted weapons are unequipped so don’t factor in at all ) :
(( Base * 5 * ( 1+ KriegBonus )) + Roid ) * ( 1 + sum of melee bonuses from skills )
Release the Beast’s melee damage bonus is added to the other melee bonuses you might have ( sum of melee bonuses from skills ), rather than to the bonus from Buzzaxe Rampage ; which means it applies to Roid damage while the base Buzzaxe Rampage and Krieg’s scaling bonus don’t. That makes that skill all the more appealing, don’t you think?
I didn’t find any quirky examples like Backstab or Ambush for Krieg. All of his bonuses are added together and then applied.
Thrown axe damage is roughly 60% of the damage you would be doing with a melee strike.
Ed : @Singlestone kindly provided a calculator