I mean, ultimately, you sat off to garner an answer from the masses. "Well, allow me to retort!" (free lifetime access to this site for the first person to reply with correct movie reference).pase' doble wrote: What have I started.....
Your question, although reasonable, is not exactly relevant. Even if it were, the applicability would be non-existent. I'll explain....
This question, much like the terminal effects of the 5.56 NATO cartridge, are limited in nature. Which is to say, there is a proverbial cap to the end-state (read: answer.) The formulas offered in this string of no doubt intelligent replies are mathematically sound. However kind sir, what they are not is a solution to any pragmatic approach to problem solving. The answer you seek is actually quite simple, albeit understated.
All you need to know is the following:
Effectiveness = [75(A)*2(D)*2(C)] where A=1B/1, D = K+1 (phonetic value), and C=4k/4
So, the answer to any problem requiring "effectiveness" (which HAS to be the common denominator associated with your question or any variation thereof) is...300BLK
So, as you see, 7 is not the answer but it IS a possibility if considering options for length of effectiveness administration.
James