it's a clear call, bounty or no. If yo uthink it is a fold then you have a horrible feel for proper shoving ranges. MP2 with 7.5BB (and presumably there should be antes in play here at this point as well...)
I'm shoving more like 31% of my range, not 6%. 22+,A2ss, A3o+, K6s+, KTo+, Q9s+, QTo+, J8s+, JTo, T8s+, 98s+, 97s+, 76s+.
That's the nash range assuming antes. OK I might tighten it a bit if i see a bounty hunter with a big stack, but not by much.
Regardless, your formula is bunk. Why? The money to be made is in going deep. Making a decision for an extra buck is terribly negative $EV assuming it is a standard $10+1 where it's $1 or $2 for a bounty. You will always be better off making a fold where it's on the margin for a bounty unless it's for a complete pittance of chips.
Would you rather get 5 $2 bounties or ship a tourney for $2,000? And if you go deep, the bounties will come on their own.
The only exception I might make to this is if the bounty is 50% or more of the buyin. (or if it is in a live casino where a $100 + $100 +$20 structure might exist, where it's $100 buyin + $100 bounty...) IN that case, *maybe* you might widen your range, but then I still think the relative stack sizes will impact this and it's a minor factor at most.
p.s. Apart from just knowing that you should never let a bounty influence you here, you wrote out a formula that there is no way for someone to evaluate because you just plunked these factors down without even a rudimentary explanation of why you chose those terms and the construction of the formula.
In the end, you are re-inventing the wheel. It's simple ICM/nash that describes the ranges (and in a non $EV affecting situation you plug in no payouts to the ICM formula, and you can get ranges.)
So if you know that someone is shoving too loose or too tight, you just adjust your calling range appropriately.