[Serious] Are Hollow Points Enough?

Disclaimer: This is a longie, but interesting. TLDR at end of post. Pics will be included too (imgur link). Pictures are of HUGE people, which is relevant to my question. One of the pics might be "disturbing" in a funny way.Hi, I have a simple, yet complex question. Do hollow points penetrate deep enough for ANYBODY? Most importantly, if the bullet has to go through an arm (bone included)? I want ammo that will work on anyone, not "for the most part". No one is bullet proof, right?Through tons of research, I am very well knowledgable about the "FBI Standard" of 12-18 inches in ballistic gel testing, meaning that if a bullet can penetrate a minimum of 12 inches in gel, then it's good to go for self defense. My thing is, for what sized person is this 12 inch minimum? A 5'10, 160 pound man? A 4'5, 100 pound woman? Any size person? Without knowing what it's based off of, how do we decide when 12" isn't enough any more, and need 15" inches for a particular person. Or 18?I'm not gonna say I don't believe in over penetration, but I DO think it's overblown out the wazoo, and people are a little too comfortable with whatever the FBI says, soley because "I mean, it's the FBI man...". The theory is 18" is the maximum (again, for who?), and anything above that, the bullet is gonna blow through the assailant and murder everybody behind him/her.Important notes:"X" inches in gel IS NOT "X" inches in a body. I've read that gel testing already accounts for bones, odd angles, and blah blah, but still.From thorough research, I've read that breaking the skin (entry) is roughly equal to 2" of gel penetration. Going through bone is equal to 3" gel penetration. Also, to exit skin, requires roughly 4" gel penetration. So, using a bullet that averages 12 inches penetration in gel, going through the chest, penetrating skin and hitting the sternum or rib along the way, will go 7" deep into a body. This seems reasonable.The way I see it, by the time you're halfway through a torso (chest area), that's perfectly sufficient to hit the lungs, heart, aorta, and all the big vitals. I'm 5'6 and 130 pounds, and my chest from front to back is 7 inches. That means by 3.5 inches in, the bullet will have hit something vital. Great, a 12 inch penetrating JHP will work just fine on me, reaching all the way to the skin of my back. In fact, it will almost go completely through me, since bullets don't perfectly expand in bodies, ESPECIALLY when they hit bone, which increases penetration. Failed expansion can add 3" to penetration, negating the 3" of penetration that would've otherwise been taken off due to bone contact.The VAST majority of people, will have something vital hit with this level of penetration (7 inches into them), as long as it's a clean shot (no arms in the way). My thing is, what IF there is an arm in the way? Would that not require the equivalent of 9" of gel penetration (2" to enter skin, 3" to penetrate bone, 4" to exit skin)? That means that a bullet that goes 12" in gel won't even have enough penetration left to get through the skin and sternum of my chest (2" for skin+3" for bone). What? Also, there's no way you can tell me all people's muscle tendons are the same resistance or density. Am I off here in how I'm looking at this? Please correct me if I'm overdoing the penetration loss due to bone and skin resistance.At 5'6 and 130 pounds, I'm extremely small, like, about as small as a man who isn't abnormally small (dwarfism, etc). can get, give or take a few inches and some pounds. Yet it would take a JHP that can penetrate 17.5" to go through my arm (including bone) and then the bone of my chest and to halfway in my chest torso area (3.5")? What about obese people (Manny Yarborough), or huge muscle bound people (probably the main people you would want to use a gun on) like Thor Bjornsson? I mean your "average" person can fit inside the guy. I don't want ammo that is good "for the most part", I want ammo that will work on ANYONE, through arm(s).Most JHP's do the BARE MINIMUM 12-14 inches of penetration anyways, due to, in my opinion, expanding TOO MUCH (HST, I'm looking at you. Federal themselves has put out official penetration at 13" in bare gel). In fact, the vast majority of the loved JHP's that people like, are in the 12-14" range. Why are people so comfortable with this? Even the FBI says they prefer at least 15", and the supppsed max limit is 18". Penetration is NECESSARY, expansion is icing on the cake. Of course it helps blood loss- i.e. bigger hole, obviously. But at what cost? Working on "most people", but not ALL people? Man, at least with FMJ, you KNOW it's gonna penetrate. It's what it does. It's not like FMJ somehow stopped being lethal. In a way, I can understand how FMJ can be seen as more reliable than JHP.The JHP, at this point, that I'm interested in is Federal Hydra Shok Deep 135 Grain for 9mm. Official penetration at 15" in bare gel, clothing, blah blah. Is this enough to penetrate ANYONE sufficiently after going through an arm? Like, literally, no matter how big someone is?The muscular guy in the pics is 6'9, 415 pounds. The obese guy next to Miley Cyrus is 6'7 and 600 pounds. The other guy, I don't know, but you get the point lol.TLDR; JHP may not penetrate HUGE people enough, but FMJ always will. Is the Federal Hydra Shok Deep JHP, which in OFFICIAL testing (not the BS Clear Gel stuff) penetrates 15" consistently, sufficient to go through an arm (including bone) and still penetrate vitals in the chest area (most likely having to break sternum/rib as well) no matter how muscular, obese or thick the person is?I mean, if only allowing COM shots, these people in the pics aren't hollow point proof, right? I mean if you shot the guy on the bed in the stomach with a JHP, would it even make it somewhere lethal, ya know? With his arm in the way too? via /r/CCW https://ift.tt/2uzAJ8H