Ok ill admit it. im not a big gun knower. but i wanna find out some more.
Ive fired rifles,pistols and shotguns, but many thing i still dont know about. so make me smarter and more culturd please.
What is a Carabine?
bolt action?

And is the effective range te distance that assures a sure hit?

A carbine is basically a short rifle.

Bolt action refers to the type of gun that has a manually operated handle in line with the barrel. To load another round you move the bolt itself back, the old round pops out, a new round comes out of the magazine. Then when you push the bolt forward, the new round gets chambered and the bolt gets locked into place. You can usually tell these types of guns by the handle sticking out from the side of the gun, typically just above the firing hand.

The max effective range varies depending on the gun and ammo. There's guns that would kill out past 1000 yards easily, then there's some that wouldn't do it past 50 yards.

Thank u. I found out what a carabine was...
but about effective range.
U say the disance it can still kill. u mean the velocity is enough?
like the guns that have a 50 meters effective range, what happends after that distance?

After that distance the bullet is travelling too slow to be consitantly accurate or to depend on it to make a kill. It will eventually just fall to the ground after it has slowed down enough.

another quick question.
Why is it that sniper rifles prefer to use a bolt action?

Bolt actions are usually more accurate and are made to fire at a longer distance.

Sniper rifles generally don't need to fire quickly, so a semi auto isn't necessary most of the time. Bolt actions are usually alot more reliable since the shotter performs the cycling of the rounds manually instead of depending on the gases or recoil.

The bolt action puts all the available power from the propellent of the cartridge behind the bullet pushing it to its target.

A semi-auto syphons off part of the propellent gas to cycle the action so as to eject the empty cartridge and insert a new one from the clip into the chamber. Not a lot, but a percentage.

Bolt actions usually have a more robust receiver and will accomodate a "hotter" round than a semi-auto will.

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It will eventually just fall to the ground after it has slowed down enough.

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Technically the bullet is falling towards the ground the second it leaves the barrel.

I'm recalling bits and pieces of conversations regarding taking one thousand yard shots with a AR15 and the mathmatics behind it.

wich bullet will travel the longest distance before hitting the ground?

I had always thought that if you fired the gun in an arc, and you drop a peice of rock from the highest point of that arc, the bullet and rock would hit the ground at the same time. Also, if you fired a gun perfectly parallel to the ground, and dropping a rock at the same time the bullet is fired, the bullet should hit the ground at the same time the rock does.

I dont see how some parts of that can work, but it is what my science teacher told me.

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Originally posted by kingenrage:
wich bullet will travel the longest distance before hitting the ground?

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If you're only talking rounds that are readily available to normal people and not artillery or anti aircraft guns. Then the .50 bmg would probably be the longest reaching round. I forget the numbers, but it will get out there pretty damn far.

If a gun is held so that the barrel is parralel with the ground, then the rear sight will be slightly higher than the front. To get the 2 to line up, the gun is tilted slightly upwards. This makes the bullet travel in more of an arc. The further you shoot, the more the rear sight is adjusted up, or the front sight down depending on the gun.

CDG, you confused the hell out of me the first time I read that. I guess your thinking is fairly accurate. Some bullets can be in flight for a second or more at longer ranges, but they also are quite a bit higher than the line of sight for a good part of that time, so the rock would take a second or more to drop.

CDG, everything you wrote in your post is correct. Gravity is a bitch =)

I read some pretty detailed information regarding gravity vs the bullet and distance shooting. If i can locate it i'll post the link.

One easy way to look at it. Rate of desent of the bullet is widely spread over rate of travel and distance traveled.

Another intresting topic that i always am on the look out for is speed of sound vs speed of the round.

I believe the speed of sound in fps (feet per second) is approximately 1,100+ a rifle shooting at let's say a average 3,000+fps. The bullet strikes the target and the sound follows behind it =) a hot round at a great distance would increase this effect.

I'm recalling the line from the movie saving private ryan when they were in the village when the sniper attacked from the belltower "he hit the ground before we heard the shot"

[This message has been edited by I Love Poop (edited 12-15-2002).]

But don't forget that the bullet rises when it first leaves the barrel ( Just to make things more complicated) Thats why each rifle/scope combo has it's own first and second zero

RipSlider

about the bolt action

in my opinion bolt action is no longer any more acurate than a high quality lever or pump action weapon. with that said there are several reasons snipers use bolt action.

first and foremost when a semi auto is used the round is automaticly ejected from the chamber. this is not a great feature when your trying to hide. it may seem insignificant to most people but to a trained counter sniper an enemy can be spoted when the shinny brass ejects.

secondly your weapon must be in tip top shape. bolt action rifles are by far the easiest to maintain and take down for cleaning. they are also inherently compact and durable because of the bolt design.

ergonomics also plays a role in the choice of bolt action. a bolt gun can be fired comfortably standing, sitting, or lying. a pump or lever gun cannot because it is far to dificult to chamber another round in the prone position.

also as it was mentioned above a bolt gun can chamber a more potent round without as much reliability concerns that other actions would face. they also retain accuracy longer than a semi auto because the slight shock of a round cycling in a semi auto may alter the scopes settings (even if it is ever so slightly, it adds up)

the list goes on and on why bolt is the superior action for any weapon not requiring sustained fire.

what is a rotating bolt?
And an overkill.

dont mind me im just fueling your intresting debates.

ripslider said that the bullet rises when it exits the cannon, how could that be?

Because the barrel is usually tilted a little tiny bit above the line of sight. A rifle is rarely fired while parrelel with the ground. If the bullet leaves the barrel at an angle it will be above the line of sight for a little while, then at the other end of the arc it will meet back up with the line of sight and hopefully hit the target.

Overkill is using too much of a gun or bullet to get the job done. An example is using a 12 guage slug hitting a bunny rabbit(bigg fluffy pink mist results) when a .22 will work just fine.

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Originally posted by I Love Poop:
Technically the bullet is falling towards the ground the second it leaves the barrel.

I'm recalling bits and pieces of conversations regarding taking one thousand yard shots with a AR15 and the [b]mathmatics behind it.[/B]

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yea, its just physics. the bullt has a downward accelleration at about 9.8 m/s^2. so itll hit the ground pretty fast. ok, lets say you shoot from about shoulder height, 1.5 m high. if you drop the bullet from that height and time how long it takes to hit the ground, than thats the same time itll take for hte bullet to hit the ground if you fired it parallel to the ground from the shoulder. except in that same time, itll have moved a fucking shitload of distance away cos its got a lot of force behind it from the gun powder

if that makes sense...........physics is fun