I sometimes wonder if my views and/or experience with guns is unusual or, possibly, atypical.
You guys always seem to talk about how the .223 Remington/5.56 NATO round is anemic and under-powered.
I was a paramedic for over a decade in gun-heavy South Florida, and I've treated any number of patients whom were shot with the "anemic" .223 round.
Guess what?
This round makes a nasty mess when it hits a human body. There are often severe internal injuries that are quite distant from the entrance wound. I've usually seen more severe wounds from a .223 than from a .308 or a 30-.06.
Granted the 30 caliber rounds are heavier and carry more kinetic energy . . . but when a human body is hit by the light, fast bullet of a .223, it seems like the bullet can richochet around inside the human body if it hits a boney surface, which makes the insides of a human body look like they were run through a Cuisinart with a set of dull blades.
The idea that a .223 does more damage than a .308 is counter-intuitive, but I'll ask you to consider the difference between a victim shot in the head with a .38 Special vs. a .25 ACP (a notoriously weak round).
Although the victim will usually die either way, the .25 ACP does more damage to the brain . . . as it has enough energy to penetrate the skull in the entrance wound, yet lack the energy to leave the skull through the opposite side of the head in an exit wound.
This means that the .25 ACP bullet can bounce around inside the skull several times, which turns the brain into macerated dog food . . . while the more powerful .38 Special goes in and comes out in a (more or less) straight line.
This is one of the reasons why many assassins and hit men often prefer underpowered, modest guns that launch small bullets.
I have an AR-15 A2 simple, full-sized rifle. Mine was made by Wyndam Arms.
If I decide to move up from the .223, then I have my Springfield Armory M1A, my PTR91, or my M1 Garand. I do plan to mount a telescopic sight on my M1A.
I believe that I'll need a good selection of weapons for different tasks, but I have no intention of engaging in guerrilla warfare . . . so I don't have 75 round drums, I don't have conversion kits to turn my guns into fully-automatic weapons, I don't have bolo shot shells, "dragon's breath" fireball cartridges, black-tipped armor-piercing rounds, cyanide-coated bullets, and so forth.
In keeping with this conversation, I've always wondered why--in the movies--we see people using an eye dropper to put mercury in a hollow-point round. Metallic mercury can be toxic, but not in the immediate short-term for use in a round. So, what is the reasoning behind this myth? (in Jaws, Chief Brody put mercury in his rounds before going after the shark).
Ultimately, I believe that caliber and bullet type mean next to nothing if you can place the bullet where you want it to go.