Routine handgun injuries leave entry and exit wounds and linear tracks through the victim's body that are roughly the size of the bullet. If the bullet does not directly hit something crucial like the heart or the aorta, and they do not bleed to death before being transported to our care at a trauma center, chances are, we can save the victim. The bullets fired by an AR-15 are different; they travel at higher velocity and are far more lethal. The damage they cause is a function of the energy they impart as they pass through the body. A typical AR-15 bullet leaves the barrel traveling almost three times faster than, and imparting more than three times the energy of, a typical 9mm bullet from a handgun. An AR-15 rifle outfitted with a magazine with 50 rounds allows many more lethal bullets to be delivered quickly without reloading.
I have seen a handful of AR-15 injuries in my career. I saw one from a man shot in the back by a SWAT team years ago. The injury along the path of the bullet from an AR-15 is vastly different from a low-velocity handgun injury. The bullet from an AR-15 passes through the body like a cigarette boat travelling at maximum speed through a tiny canal. The tissue next to the bullet is elastic—moving away from the bullet like waves of water displaced by the boat—and then returns and settles back. This process is called cavitation; it leaves the displaced tissue damaged or killed. The high-velocity bullet causes a swath of tissue damage that extends several inches from its path. It does not have to actually hit an artery to damage it and cause catastrophic bleeding. Exit wounds can be the size of an orange.
https://www.theatlantic.com/politic...land-should-change-the-debate-on-guns/553937/
Read this article yesterday... just horrifying. I also saw a demonstration video showing how an AR-15 bullet pulverizes a human's internal organs. They use some sort of gel material specifically designed to mimic human organs. If I can find it again, I will share it here. It was also horrifying.
Semi-automatic assault rifles are
weapons of war purposely designed to KILL HUMAN BEINGS. Anyone who claims they are good for hunting deer is a fucking liar, imo, because the damage these weapons do would make the deer or other animal unfit for eating, mounting or whatever the hell else hunters do with the animals they kill.
I don't disagree with your overall point that AR-15's are weapons of war with no good reason for the general public to be able to own/purchase easily, but I believe the cartridge is actually *less powerful* than a typical hunting rifle. An "assault rifle" is actually characterized by being of medium-range and medium power, for more dynamic engagements on the battlefield. They came about late in WW2 with the German Sturmgewehr 44, the "storm-rifle", as in to storm, i.e. to assault. Infantry rifles at the time used full-powered rifle cartridges. These types of cartridges today would be used by "battle rifles" like the American M-14, or Belgian FAL, which will nowadays have semi-automatic/fully automatic fire. Anyway, at the time the infantry rifles used in WW2 were designed, riflemen were essentially highly-trained marksmen engaging at relatively long distances. But the nature of warfare changed a lot from the late 19th century into the mid 20th. The advent of the machine gun made riflemen essentially support for the machine-gun team in a squad. Battle rifles had effective ranges of something like 500 meters, but typical engagements in WW2 were not that far, so the idea behind the assault rifle was to give the average rifleman a less powerful weapon, but one that was much more versatile, with selective fire. Essentially, assault rifles are designed to let the soldier move easily and still pack a punch, without the bulkiness/unwieldiness of a full-powered battle-rifle.
So, an assault rifle like the AR-15 would use medium size, medium-power cartridges, e.g. 5.70 mm bullet diameter. Cartridges used for hunting can be smaller/bigger depending on the game, but often bigger rounds are used because hunting rifles, like battle rifles, are meant to be used at longer distances than an assault rifle, and are designed to be accurate at these distances. So you might easily see a .260 Remington round, which is substantially bigger than an AR-15 round, with a 6.7 mm bullet diameter. or even a 0.308 Winchester round with a 7.8 mm bullet diameter.
So actually, the reason that an AR-15 isn't not a good hunting rifle is because it is *not powerful enough*. A hunting rifle is designed to be highly accurate, to fire a single, powerful shot accurately. AR-15s are designed to fire medium-power cartridges but can fire semi-automatically, allowing for a much higher sustained rate of fire for *shooting at people who would be shooting back*, at medium ranges.
Anyway, the most effective guns for a school shooting would probably a couple of semi-automatic pistols with high-capacity magazines. You don't need a lot of stopping power if you are shooting at people inside a room, without body armor or cover to shoot through. Indeed, that's what Cho Seung Hui used to kill over 30 people at Virginia Tech.