So, ELD-M = TMK? Nope
88 ELD-M = 88 TMK ? Probably nope, we'll see
Aren't you supposed to be mathing all this out so we don't need to look at actual results any longer?
The bullets are equal diameter...so... (88 - 77) / 77 = (88*7000/.224^2 - 77*7000/.224^2) / 77*7000/.224^2
The former is just a lot quicker shorthand for someone that actually understands math... but also understands there are so many other variables in play that actual results will tell the story well, while "this times that divided by that times this other thing" will probably not.
Try harder