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Can someone give me a crash course in bullets? I just recently
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Can someone give me a crash course in bullets? I just recently acquired my first arm, ever. And I've always been curious to learn more about the differences in the caliber and size of a billet, and what each is intended for and capable of doing.

To put it in perspective, I only know about 9mm and 50 cals, which I know that the latter is intended to bring down fucking airplanes.
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>>30671520
Start off with reading the sticky. Any specific questions? What gun do you have?
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>>30671549
A Glock 17, mate.
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>>30671520
killing yourself would be a good start.
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>>30671520
Lesson 1: A combination of bullet, primer, casing and powder is called a cartridge. Not a 'bullet.' :^)
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>>30671560
Get familiar with it before you take it to a range. YouTube is great for disassembly videos and answering a lot of your questions on it. Look up basic safety and read up on any range rules beforehand. Here's a chart for figuring out what you're doing wrong when you shoot it for the first time. Just like anything else it's going to take practice to get better.
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>>30671560
FMJ's for plinking and training
Good JHP's for actual self defense
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>>30671520
The later was intended to shoot airplanes down but I don't know if anyone uses them for that purpose any more.
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>>30671691
fmj = full metal jacket
jhp = jacketed hollow point
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>>30671520
Here's a real answer.

http://www.luckygunner.com/labs/self-defense-ammo-ballistic-tests/
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>>30671520
I'll give you a /k/ meme rundown of the common pistol calibers.

.25 ACP: Fetish round
.32 ACP: Fetish round
.380: Lol worse than 9mm
9mm: Lol no stopping power
.357 sig: Meme round
.40 S&W: Meme supreme
.45 ACP: but muh high capacity
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>>30671706
Thanks, mate. How much damage can a JHP do to the human body?
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>>30671751
.45 GAP: lolwut
.460 Rowland: it's 1 bigger m8
.50AE: one shot kill headshots
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>>30671520
bullet = projectile
Cartridge/round = casing containing priming compound, powder, and a projectile
And no, you don't know shit about .50. Caliber just means diameter. 9mm means a bullet with a diameter of 9 millimeters. .50 means 0.50 inch diameter. The .50 BMG cartridge has been used by early fighter planes, but there are several .50 cal cartridges. .50 GI is just a slightly larger .45 ACP. .50 AE is what you get if you made a .44 mag as wide as it's rim (thus making it "rimless", due to not having a protruding rim). .500 S&W is as large of a cartridge as manufacturers feel comfortable sticking in a handgun. None except the BMG would ever be considered fit for an AA role.
>>30671751
You forgot 10 out of 10mm, God and Col. Cooper's gift to mankind. If Browning was alive, he'd redo all his handgun designs to fire such a perfect caliber.
>>30671768
More than an FMJ of similar size. HPs just mushroom out to provide more frontal area. More crush area, reduced penetration.
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>>30671751
>7.62x54R
cyкa Блять

>.577 Tyrannosaur
ARE YOU A BAD ENOUGH DUDE TO SAVE THE PRESIDENT?!?
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>>30671815
>Caliber just means diameter. 9mm means a bullet with a diameter of 9 millimeters. .50 means 0.50 inch diameter.

This is not true all of the time, due to how measurements are done (either to a peak or to a valley), leading to things like a .44 special actually being .43 in diameter.
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>>30671856
.44, .38, and others were done in a time when heeled bullet designs were the norm. A heeled .44 spl has a projectile .44 inches in diameter. We stopped doing heeled bullets because that shit is retarded and bad for accuracy. Same case, same weights, similar charge/ charge equivalents, but the name was from a bygone time and bygone design.
But yes, there are minor variations based on if the caliber is measured on the bullet, a peak, or valley, or you have a retard at the helm who picks something close because the name was already taken.
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>>30671768
Between 40 and 80 DAM depending on small arms skills.
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