ORIGINAL: Tuco
I think you also must divide by caliber and brand of bow
ORIGINAL: johnnybravoo77
If youKILL 1 deer with a gun and 1 with a bow, that equates to; dead=gun, and dead=bow. So killing power should be as follows: (gun x dead)x (bow x dead) = killing power
Please correct me if I am wrong, it has been several years since I have used this formula.
I watched "Smarter than a fifth grader" last night. The formula is as follows:
[Gun weight/bow weight (caliber - shaft length)* (distance to deer)] / [deer weight* bullet grain/(deer age + length of tail - ATA of bow)]
Recalculate number at different levels of humidity and you have your answer