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Sorry, you need to specify WHICH .308 bullet and at what distance. As distance increases, the RATE of drop also increases.
It improves that accuracy and distance of the bullet by causing the bullet to spin not tumble like a smooth bore barrel musket.
Yes and it helps with accuracy as well. The barrels of long distance guns are much longer due to the fact that they are firing much longer rounds, what also helps with distance and accuracy is that the inside of the barrel is grooved in a spiral fashion which causes the bullet to turn allowing it to go further and straighter.
The lands and grooves in the barrel that impart spin to the projectile
barrel length increases accuracy not range. It increases range also. not it doesnt, it allow for different bullets which may contain more gun powder but it you fired the same bullet from a regular M-16 and a short barrel M-16 they will both travel the same distance as the bullet is subject to the same thrust, friction and gravity forces which ultimatly determine the max range. however the longer barrel contains more coils giving the bullet more spin enhancing accuracy. to increase range you need more thrust or reduced friction or mass of the bullet none of which has anything to do with barrel lengh ==Actual Answer== Please do not speak if you do not know what you are talking about. It is a well known fact that barrel length increases range, that is a big reason they use them on sniper rifles. Seriously, it is laughable that you would try to speak against it when you have not even tried to research it, everyone in the firearms world would laugh. The longer barrel allows for the expanding gases to have more time to accelerate the bullet down the barrel, and increases the muzzle velocity, which in turn allows the bullet to travel farther. I hope I don't have to describe why a faster muzzle velocity increases the range as well. Now as for accuracy, I have not read anything yet that really gives me a good reason besides "it should." I'm going to leave it up for grabs for now to be interpreted either way, but as of now, I have not found sufficient evidence that barrel length greatly affects accuracy. If anything, a longer barrel will allow for more vibration which can slightly lower accuracy. Most of accuracy is up to other factors in the gun, like rifling for example.
The average 9mm Parabellum pistol has an effective range of about 50 meters. The cartridge has a MAXIMUM range (no accuracy) of about 960 meters.
The drop is not a straight like, but a curve that increases as distance increases (a parabola) since speed is decreasing. Winchester has a ballistic calculation system on line that will let you plot the trajectory of a rifle bullet at different ranges. As asked, there is no way to answer.
Yes.
A bit over 3,000 yards, depending on the rifle. Please note tat is NOT the effective, usable range, simply the maximum distance the bullet can travel over a relatively flat surface (with no accuracy)
Rifling causes the bullet to spin through the barrel and downrange. This spin stabilizes the bullet, allowing it to maintain a straight course to the target. Without the spin, accuracy would be dismal.
The rifling is there to spin the bullet, which gives greater accuracy.
USABLE range is about 5900 feet. The bullet will travel nearly 5 miles, but not with usable accuracy.