Does the length of a gun barrel determine the accuracy and or traveled length of the fired shot?
540651
Yes a 6 in barrel hand gun is more accurate than a 4 in. However some people find it harder to keep it steady while lining up the sights. personally I have no trouble lining up the sights.
847076
Bound's hubby here:\n\nLonger barrel versus shorter barrel and accuracy has more relevance when you're shooting iron sights. When you're shooting a scoped rifle the most important job of the barrel is to start bullet rotation and completely burn the powder. In smokeless powder cartridges, the powder is generally completely consumed by the time the bullet has exited the barrel of an 18" carbine... so the difference between 22 and 26 inch barrels is academic.\n\nIf you are shooting with iron sights, barrel length is important. The greater the distance between front and rear sight, the finer the adjustment for elevation and windage, making for more precise placement of the bullet. \n\nAs an aside... the M1 rifle and the M14 rifle have about 22 inch barrels and both can be counted on to accurately place their shots at 1000 yards. \n\nGood luck.
969234
Definitely one or the other :-)\n\nMost rifles have a clockwise twist. There are, however, osme barrels that utilize a counterclockwise twist. Why, I'm not sure - it must be the preference of the barrel manufacturer.\n\nAs a long-range shooter, I can tell you that barrel twist does affect the exterior ballistics of the bullet. There is a phenomenon called spin drift that gradually pushes a bullet off-course - in the case of a right-hand-twist barrel, it moves the bullet to the right slightly. Not a concern, though, until you start shooting at distances of greater than 800 yards or so, where it can push your bullet about 2 inches off course.
881471
Bound's hubby here:\n\nA bull barrel is typically a barrel of larger diameter than a typical sporter barrel ... bull barrels are about 1" in diameter. Rifles that typically have "bull barrels" are varmint rifles and target rifles. These barrels serve two major fuctions ... \n\nFirst, bull barrels are stiffer and resist the harmonic vibrations generated by a bullet streaking down the bore ... thereby generating a higher degree of accuracy (both bullet on target and grouping). \n\nSecond, a bull barrel adds more mass to a rifle (generally making the rifle muzzle heavy) which helps minimize movement of the rifle and sighting errors. \n\nI know that the bull barrel on my Remington 700 Varmint generates a fair amount of heat in 1000 yard matches (generally 25 shots fired in a 30 minute period), and the bull barrel does not contribute to heat reduction! This is why most target shooters that shoot bull barrels have mirage bands running from muzzle to receiver to reduce the barrel heat generated mirage!\n\nActually, most "bull barrelled" rifles are not that much heavier (perhaps 2-3 pounds) and make accurated longer range hunting rifles. \n\nIt is not that barrels warp when hot, it is the vibration of the barrels. Thinner barrels vibrate more, causing more movement of the barrel which will displace shot placement!\n\nGood luck!
757769
Here's how to solve this.\nThe velocity is a vector, and right-angle components of velocity operate independently.\nThe bullet is fired with 2000 ft/s horizontal velocity but zero vertical velocity. So you know the horizontal and vertical components of velocity at the instant the bullet leaves the barrel.\n\nHowever, once it leaves the gun's barrel, the bullet experiences no horizontal forces, but vertically it is acted upon by gravity.\n\nSo: 1) how long does it take for the bullet to fall 5 ft, starting with zero vertical velocity? (hint: s = 1/2 a t^2\n\n2) Once you figure out how long until the bullet hits the ground, then figure out how far the bullet has travelled horizontally during that time, given 2000 m/s initial horizontal velocity and no horizontal forces.\n\nDoes this help?
1054621
It depends on the range.Bullets are made several different ways.Some sharp pointed,some hallow point,some are rounded and flattened.The pointed ones have a longer range while the flat ones have a shorter range.The flat tip or hallow points make impact with an object and explode.The ponted tip will knock something down at a long range but does not do as much damage.Most hunting riffles use a point in between so that you still have a little range and power but you do not want to destroy the meat.Most military guns are pointed for the range and but is enough to knock down the enemy.
835272
the first answer from chris was correct. given youre choices of a short barrel length i imigine you are going for a rifle in the 22 lr to 223 remington caliber. get what ever you want because the burn rate of powder from those calibers will be sufficient in a 18 inch barrel and a 20 inch will add none or very little velocity. i notice you are talking about just heavy barrels. if it is just a bench rest rifle and wont be used for carrying i would opt for the longer barrel. but to get to ballistics i have 2 ar-15s both from dpms. one is a 16 inch heavy barrel and the other a 20 inch heavy barrel and they are identical in accuracy, actually i keep tighter groups with the 16 inch but it is a flat top and has alot better scope than the military versions that mount through the carry handle.
427792
I disagree to some extent with the previous answers to your question.  They fact that the shell will be left with identifying marks from the firing pin or shell extractor are correct and will be found regardless of the type of shotgun used - single shot, pump, semi-auto.  How ever there are other traceable factors related directly to the projectile or "bullet".  \n\nFirst, virtually any projectile(s) shot from the gun will be encased in a "wad" or sabot which will come into direct contact with the inside of the barrel.  Each barrel has marks and scratches unique to that individual gun.  While a shotgun barrel may look shiny and smooth, it is full of micro scratches and ridges that leave a pattern on anything coming into contact with it as the projectile is shot though. These scratches and marks will transfer to the wad, shot cup or sabot and can be compared to the barrel for a definitive match.  You do not have to have any rifling in a barrel to make this identification, the tiny scratches and ridges are the same as used to trace a projectile to a rifled barrel.\n\nSecondly, a plain slug shot through ha shotgun barrel will have these traceable markings imprinted on the slug itself and any gas checks or wadding behind it.  While the sabot, wadding or shot cup normally separate from the projectile before impact with the target, the imprinted slug will found at or near the target itself.  Even so, the wads, shot cups and sabots are routinely recovered and used to identify the shotgun that fired them and in criminal cases to convict the shooter.  I have been involved in many case where this was enough evidence to convict a defendant charged with anything from poaching to murder.  \n\nAlso certain characteristics of a barrel left on objects fired from it can lead investigators to determine what brand, type  or even age of gun they probably came from.  The myth that a shotgun barrel leaves little or no traces on a projectile is simply not at all true.
1142154
hi pinku. its the science which deals with guns and bullets. when ever a bullet is fired, it gets scratched by the barrel of the gun in a particular way. it is totaly unique. no other gun can creat the same type of scratches on the bullet. its like the finger print of humans. when ever a crime takes place, it can be found out from a group of guns that from which gun was the bullet fired. and from that gun's licence number, person can be identified. thus, forensic experts use this technique to catch the culprit. \nto do this, a bullet is fired from the gun in the laboratory. it is fired at a certain angle in water tank that prevents it from getting scratched from any other outer obstacle. then the bullet is put under microscope and its photograph is taken. same is done with the bullet which is found on the crime scene. then both the photographs are matched.\nalso, it can tell the distance from which the bullet was fired. when ever a bullet is fired, it gets heated up due to gunpowder burning. this results in burning of human skin when it enters it. so, the greater the distance, less is the burn.\nit can also tell that which gun was used.\n\nhope that i was able to answer your question.\nNOTE:- bhai, kisi ko thok mat dena! hahaha......\n\ngood luck!
78564
Shotgun gauges are determined by the number of lead balls of a given diameter required to make one pound of that size ball. Thus 10 balls of 10 gauge diameter are required to make one pound of such balls, or 20 balls of 20 gauge diameter are required to make one pound, and so forth. This is the traditional, and very old, system. The actual (nominal) bore diameters of the various gauges are as follows: 10 gauge = .775 inch, 12 gauge = .729 inch, 16 gauge = .662 inch, 20 gauge = .615 inch, 28 gauge = .550 inch. The .410 is named for its nominal bore size, and is not a gauge at all.
895259
not all that sure, but in 1950 the british battleship Vanguard fired an eight inch reinforced base shell from a 15" gun using a double sabot and achieved a muzzle velocity of 4630 fps and a carry range of 37 nautical miles!..
1157115
No, it falls back down at its terminal velocity(maybe), which is slower than the muzzle velocity because of drag.\n\nThe bullet leaves the gun with a given amount of kinetic energy: 1/2*m*v^2 where m is the mass of the bullet and v is its initial velocity.\n\nAir has non-zero viscosity, which is a resistance to shear forces.  When the bullet flies through the air, it drags air along with it.  This gives some of the bullet's energy surrounding air, reducing the bullet's velocity and kinitic energy.  Drag forces between fluids and solids occur in the direction opposite their relative motion.  (If the fluid is stationary and the bullet is moving, the drag is in the opposite direction of the bullet's motion.  If the fluid is moving and the object is stationary, the drag on the solid is in the direction of the fluid motion.)\n\nSimultaneously with drag, gravity is applying a force toward earth.  This too reduces the bullet's velocity and kinetic energy.  However, as the bullet flies higher into the air it gains an equal amount of potential energy from gravity.\n\nThe net result is that the bullet is always losing energy in flight because of drag.  This means that the amount of potential energy at the top is less than the initial kinetic energy, and it is thus impossible for the bullet to be going at the same speed it was shot when it hits the ground.\n\nThe fastest an object will fall under the influence of gravity is the terminal velocity.  At this velocity, the force of drag (which increases with the size of the object's profile, the viscosity and density of the fluid, and the relative velocity of the solid and the fluid) exactly balances the gravitational force.
840106
With in the casing above the trigger is the fireing mechanism, This consists of 2 springs ( 2 double barrel, 1 for singal barrel) and 2 hammers (1 hammer if singal barrel) The hammers are alined with what we call fireing pins which are also alined with the primer of the cartridge once the gun is loaded.\nOunce the trigget is pulled then the spring forces the hammer to hit the fireingpin, which hits the primer sending a chane reaction through the cartridge for the conbustion to take place with the gunpowder, then the casing(wad) which the shot is positioned behing projects the buckshot up the barrels at roughley 450ft per sec . That is just a simple explanation of a tipical double barrel shotgun. How ever some,  more common in over&unders work on the theory of inertia, where the recoile from the the first shot activates the mechanism for the second shot, its also the same princable for semioutomatic shotguns.
972039
For naval guns and artillery, "caliber" refers to the ratio of the barrel length to the bore diameter.  Thus, a 16 in 45 caiber gun would have a barrel 720 in (60 ft) long, and a 50 caliber, 800 in (66.67 ft) long.  Incidentally, people often refer to a ".38 caliber" revolver, or a ".30 caliber" rifle.  Actually, the CORRECT usage of the term, when applied to the bore diameter of a rifle or handgun, is to have it PRECEDE the number, ie, "caliber .38" or "caliber .30."
591555
I'm assuming only the tip of the barrel is compensated or a threaded compensator will be attached to the muzzle.  I don't like compensated handguns.  The compensator usually sends a lot more muzzle flash out of top of the compensator in your line of sight than a noncompensated one.  This can ruin your night vision if your firing at night, and most self defense situations are at night.  The compensator will however reduce muzzle climb and recoil by about a third while increasing noise by about a third.  The increased noise can be disorienting for some if your not wearing hearing protection, a normal gun will make your ears ring for a few minutes. NOTE: Only shoot without hearing protection in an emergency.  As for power you shouldn't have any real loss in power.  Now a revolver with the entire length of the barrel compensated can cause a loss in power but I can't tell you how much.
772484
Most will shoot accurate to 100 yards.  I have taken many deer with a shotgun at the 80-100 yards away.  A rifled barrel with a saboted round will make a 150 yard shot possible with not problems for a good shooter.
756015
In resonse to those above to who answered "9mm" and "9mm  Dddddduuuuuhhhhh"  I believe the question was concerning the lenth of the pistol, not the cartridge, and either way, you are both wrong...9mm is not the lenth of the round, nor is it the lenth of the cartridge...the brass is 19mm long, and the projectile is 9mm wide...that is why the cartridge is known as the 9x19...anyway...\n\nIn response to the question...it depends entirely on the manufacturer and the model.  A Glock 17 is 7.32" long, with a 4.49" barrel, the Glock 19 is 6.85" long, with a 4.02" barrel...and the model 26 is 6.29" long, with a 3.46" barrel...\nAnd these are just the different models of one company...so, kinda need to know at least a manufacturer....