When you use a crossbow, you will use a bolt instead of an arrow. This practice dates back to medieval times when crossbows were first used. You will find that some people use the terms arrow and bolt interchangeably, but they are actually different.
Fletchings are the small wings that are at the back of the bolt by the nock, and they are there to stabilize the trajectory, keep it moving forward, and prevent it from moving from side to side. Bolts today will have three fletchings, and they are made of plastic. Some people do call them vanes. They come in different lengths, and they are glued to the bolt.
What Is the Difference Between a Bolt and an Arrow?
You will hear people calling crossbow bolts by both the name arrow and bolt. While this is fairly common, you will never hear an arrow used in a standard bow called a bolt. Bolts are only used for crossbows. During medieval times, crossbows were heavy and large, and they were set on wheels and drawn by oxen. They used bolts, which were short and fat, and very powerful.
Today, the primary difference between bolts and arrows is that bolts are shorter. Bolts are normally between 16 and 22 inches, while arrows are longer. Bolts may have fletchings, but they don’t have the stabilizing vanes near the back, and arrows always do.
Different Parts of a Bolt
Crossbow bolts range from 16 to 22 inches in length, and on average they are 20 inches. It is always important to get the size recommended by your crossbow manufacturer because using the wrong size, especially if it is too short, can damage your crossbow. Take a look at the parts of a crossbow bolt.
The main part of the bolt is called the shaft. It is the body of the bolt, and all of the other parts are attached to it. Most of the time, bolts are made of aluminum or carbon, which are lightweight materials that won’t splinter. They hold their shape well, and they come in different levels of stiffness. The stiffness is actually called the spine, and a bolt that is resistant to bending is said to have more spine than another one.
You will also find out the weight of the bolt shaft, which is given in grains. You might see the total weight of the bolt, or you might see the weight as grains per inch. If it is grains per inch, you can find the total weight by multiplying this number by the length of the bolt. For example, if the grains per inch weight is 15, and the length is 20 inches, then you would multiply 15 by 20 to get 300 grains.
Another part of the arrow is the nock, which is usually made from plastic or aluminum. It is attached to the back of the shaft, and it holds the bolt in place when you are getting ready to take a shot. There are different types of nocks, including the half-moon nock and the flat nock. Your crossbow manufacturer will recommend the best nock to use on bolts for your crossbow, and you should listen to them. This is important because you should always follow the manufacturer’s recommendations to make sure you don’t breach your warranty.
The fletchings are the wings you see on the back of the bolt. They are close to the nock, and they are important to keep the trajectory of the nock stable while it is in flight. They also ensure that it continues moving in the same direction without moving from side to side.
Bolts usually have three fletchings, and they are often made from plastic. Some people call them vanes, and on arrows, they are often made of bird feathers. However, they aren’t made this way for crossbow bolts.
Fletchings can be different sizes, and they are usually longer on longer bolts. They are glued to the shaft, and they are important for making sure that the bolts work as you want them to work.
The bolt head is the arrowhead, and there are two main types. The first is the field point. They are also called target points, and they are used for target practice. They aren’t sharp, and you can’t use them for hunting. They only have enough tip to penetrate the target, and they are usually screwed into the bolt shaft.
The second type is called a broadhead. They are designed for hunting, and there are three different types. You can get a fixed blade broadhead that has a fixed blade that is sharp enough to penetrate the target. There are also broadheads with removable blades, and they can be replaced when you need them to. Finally, they have expandable blade broadheads that expand when they penetrate the target.
Different Types of Bolt Fletching
The vanes or fletchings are attached to the bolt in three positions so that they can help steer the bolt to the target. There are three different methods of fletching that are normally used, including the following:
When you use straight fletching, it is mounted in linear alignment to the centerline of the shaft. This style of fletching gives you the least drag. This style is popular because it helps the bolt continue with a flat trajectory all the way to the target. That said, hunters don’t usually want to use this type when they are shooting broadheads because they have a larger surface area than field points, and the straight fletching has trouble controlling the arrow.
Another type of fletching is offset fletching. The vane is offset to the linear direction of the centerline of the arrow. Although the vane is in a straight line, it is placed at an angle that is between one and four degrees off the linear of the arrow. This adds a small amount of drag, but it helps to control the arrow better. This is the type of fletching that most crossbow hunters prefer.
The third type of fletching is helical fletching, and it is in a spiral orientation on the shaft. It basically winds around the shaft, and it helps to cause the bolt to rotate, similar to a bullet from a rifle. This type is not always practical to use for crossbows because it can actually be more erratic in flight.
Other Things to Know About Fletchings
It is important to remember that the temperatures outside can influence the vanes. When it is colder out, the vanes are stiffer, and when it is hot, they are softer and more pliable. You should practice with them so that you know how they change your bolt flight.
If you have too much offset, it can decrease the downrange velocity and the accuracy. The direction you offset them doesn’t make a difference, but you should take care not to offset it too much.
Most modern bolts have fletchings, which are the vanes that help stabilize their trajectory. Most of the time they have three, and they are usually made of plastic.