What does it mean in terms of "Bull Barrel" on a rifle?
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Bound's hubby here:A 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 ...
First, 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).
Second, 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.
I 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!
Actually, most "bull barrelled" rifles are not that much heavier (perhaps 2-3 pounds) and make accurated longer range hunting rifles.
It 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!
Good luck!
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I didn't know, but found a pretty good answer here:http://www.military.com/soldiertech/0,14...
"Bull barrels are barrels that have significantly more mass than more conventional or "sporter" barrels. The purpose of this additional mass is to act as a "heat sink" by absorbing the radiant energy associated with firing. As a rifle is fired, the heat from the propellant gasses is transferred to the barrel. As barrels heat up they are subject to warping. The greater mass of the "bull" barrel allows more energy to be absorbed before barrel warping occurs. The down side, however, is that bull barrels are much heavier than conventional barrels, which precludes their use in common battle rifles, where weight is a limiting factor."
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bull barrels are usually wider than a regular barrel, and i dont think it has as much to do with heat as it does to do with accuracy. they are heavier and provide more weight and stability while firing. they also have fluted bull barrels, but technically speaking, you wont be firing enough to make the barrel hot enough to warp it out of a bull barrel. they are usually found on bolt action and semiauto rifles.Whats the strongest magnum in the world ?
A bull barrel displaces heat, but is to heavy to carry for hunting.A fluted barrel does displace heat but not as well as a bull barrel, but it can be used more practically for hunting.
Bull barrels have a tighter "whip" then smaller diameter barrels. When you fire, the barrel will move. With more matter in the bull barrel, it will tighter up this whip resulting in higher accuracy. They do absorb more heat and are good for alot of shooting. Barrels are fluted to give more surface area for faster heat dissipation.
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A bull barrel is a heavy weight barrel. That is, it is bigger in diameter than a sporter barrel. This added weight and diameter tends to reduce the harmonic vibrations when the gun is fired. A lighter weight barrel will vibrate as the gun is fired. The amount of vibration will determine part of the inherent accuracy of the gun. The greater the harmonic vibration the less accurate the rifle will be. Fluting is one way to get rid of some of the barrel weight without markedly effecting the tendency of the barrel to dampen harmonic vibrations. An added benefit of fluting is that the barrel will dissipate heat more rapidly. This is caused by the fluting giving the barrel a greater surface area. The rate at which a barrel can dissipate heat is governed by its surface area. The greater the surface area, the more rapidly it will dissipate heat. So, here's the bottom line.. get a gun with a fluted bull barrel and you will have the benefit of greater accuracy and a reasonable carry weight for a hunting rifle. Besides, a fluted barrel is just damn good looking.A "Bull Barrel" is heavier (larger diameter) than a standard barrel, usually close to 1" or more in diameter.
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