# What Is Archery Arrow Shaft Size Mean? (Question)

A thicker shaft gives more rigidity than a thinner shaft. Spine deflection is used to test the performance of aluminum and carbon-fiber composite arrows. It is assumed that the arrow has a stiffer spine if the number is less. In the same way that combination arrows have a firmer spine, a lower number indicates a more flexible spine.

• Shaft Diameter The shaft of an arrow is usually marked with a four-digit number, which is the most common (e.g., “2413”). The first two of these numbers correspond to the outer diameter of the arrow shaft, which is measured in 64ths of an inch. The third and fourth numbers pertain to the length of the arrow shaft.

## How are arrow shafts measured?

The correct arrow length is measured from the bottom of the shaft, inside of the nock groove (deepest place where the string enters the nock), to the cut end of the shaft, excluding the point or point insert, but including the tip or point insert.

## Are 340 or 400 arrows heavier?

400 arrows are significantly more powerful than 500 arrows. The strength of 500 arrows is greater than the strength of 600 arrows. A weaker arrow is referred to be “softer.” Bows with draw weights of 15–35 pounds typically require 600 arrows, while those with draw weights of 35–55 pounds require 500 arrows, those with draw weights of 55–75 pounds require 400, and bows with draw weights of 75–95 pounds require 340.

## What does a 340 arrow mean?

It is more effective to use 400 arrows than 500 arrows. The strength of 500 arrows is greater than the strength of 600. It is “softer” to use a weaker arrows. Bows with draw weights of 15–35 pounds typically require 600 arrows, while those with draw weights of 35–55 pounds require 500 arrows, those with draw weights of 55–75 pounds require 400, and bows with draw weights of 75–95 pounds necessitate the use of 340 arrows, respectively.

## What does 350 arrow mean?

The spine of the arrow is represented by the numerals. The stiffness of the arrow is indicated by the number of spines; for example, a 400 spine arrow is typically used with bows weighing 40-60 lbs. A 350 spine arrow is designed for bows weighing between 55 and 75 pounds, and a 500 spine arrow is designed for bows weighing between 30 and 50 pounds.

## How do you know what size arrows you need?

In order to determine the length of an arrow, it is customary to measure it from the tip to the neck of the nock. The length of your draw and the spine of your arrow will both impact the length of your arrow. You’d need an arrow that’s roughly 27 inches in length if you have a 28-inch draw length and want an arrow that terminates at the front of the riser on your bow.

## What diameter are arrow shafts?

The majority of wood arrows are available in three different diameters: 5/16″, 11/32″, and 23/64″. When selecting a spine, be sure you utilize a test kit or, at the very least, a spine chart. Wood arrows and shafts are available in 5# spine groupings since they can be a little more “touchy” when it comes to finding the proper spine.

## What is a 500 spine arrow?

It is essentially a measurement of the stiffness of an arrow that is used to determine its spine rating. The identical Easton arrow is available in a number of different stiffnesses: the lower the number, the stiffer the arrow. The stiffest arrow is the lowest number. For example, a 330 spine arrow is stiffer than a 500 spine arrow, which is stiffer than both. As a result, a 500-point arrow bends. When the weight is placed, the height increases by 5 inches.

## What spine arrow should I shoot with a 70 lb bow?

With a 26.5-27″ arrow coming out of your Bear, a 400 spine arrow would be quite adequate for the job. The length of the arrow is just as important as the draw weight while shooting.

## What weight arrows should I shoot?

If you want to target practice, you want an arrow that weighs around 5 to 6 grains per pound of draw weight in total (shaft, vanes, insert, nock, and field point combined). As an example, if your bow has a draw weight of 60 lbs., you should use arrows with a total weight of between 300 and 360 grain.

## How many grains is a 500 spine arrow?

Stronger spines tend to weigh less than weaker spines, which in turn tend to weigh less than stiffer spines. An arrow with a 500-spine weights 7.3 grains per inch on average, whereas a similar model with a 300-spine weighs 9.3 grains per inch, according to the manufacturer.

## What length arrow should I shoot?

A decent rule of thumb is to not trim it any shorter than the center of the riser, unless absolutely necessary. At full draw, the end of your arrow would be exactly in the center of the shelf. A full-length, uncut arrow nocked and drawn back will give you the most accurate measurement of how long your arrows need to be.

## Is a 400 grain arrow good for hunting?

If you want to keep it as long as possible, don’t trim it any shorter than halfway up the riser. At full draw, the end of your arrow would be directly in the center of the shelf. A full-length, uncut arrow nocked and drawn back will give you the most accurate measurement of how long your arrows should be.

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## What happens if your arrows are too lightly or heavily spine for your bow?

Every arrow shaft has a certain amount of stiffness known as spine, which determines how resistant it is to bending. Because of the excessive motions caused by the “archer’s paradox,” arrow flight and accuracy will suffer as a result of using arrows that are either too lightweight or strongly spined for your bow.

## What does 45 60 Mean on an arrow?

It translates to a 45-60 pound bow. If your draw length is greater than average and you fire 60 lb, you will almost always require a little more than the arrow’s advertised weight. Posts 1 – 4 out of 4 total.