Immolate exact scalling

[HhitSappens]

Hello there,
I am messing around with WeakAuras for some dot tracking and min/max and I am stuck trying to find the exact base damage+spellpower coeficient of immolate

First of all, since mastery does increase immolate damage I am assuming the formula is:
(BaseDamage + SpellPower*Coeficient)*Mastery = Damage

WowHead says the "BaseDamage = 502" and "Coeficient = 0.47". After testing some different spellpower gear I could never make that formula trully work, the damage was always a bit off.

[00:07:54] Dump: value=GetMastery()
[00:07:54] [1]=33.404998779297

(502 + 50052 * 0.47) * 1.33404998779297 = 32052 != 41981(Tooltip)
(502 + 45502 * 0.47) * 1.33404998779297 = 29199 != 38244(Tooltip)
(502 + 50496 * 0.47) * 1.33404998779297 = 32331 != 42346(Tooltip)

If you isolate for "Coeficient", you will get a close result for =0.619, but that is assuming "BaseDamage = 502" in first place.
But after removing my gear and testing with very low SpellPower gear, I could really notice that number is really off.

So that makes me believe WoW head info is incorrect - unless I am messing up something really bad.
Any help is welcome.

[Deleted]

You are correct, the tooltip on wowhead is incorrect. Even the most recent modification tooltip is the same.
And the values are indeed off. Dont call for a nerf though .

Seems like a * 1.31 buff.

[Alarinth]

Sounds like somebody forgot to update the values after Immolate got buffed by 30%.