The second section of this article contains tips for using bullet weight to your advantage and how to adjust bullet weights to maximize your potential ability to remain on target. A grain is a unit of measurement of mass. A common misconception is that the grain information on the box is referencing the powder found in a cartridge. Although gunpowder is measured in grains and sometimes a single particle of propellant is referred to as a grain , this is mostly only relevant to reloaders and is not what the box is indicating.
There are all sorts of slang terms for a round of ammunition. Sometimes these nicknames are misleading and cause confusion. For instance, in casual conversation a cartridge may be referred to as a bullet. In actuality, a single round of ammunition is made up of four basic components, with the bullet being just one of those elements. Primer : The part of a cartridge that is struck by the firing pin, creating a small explosion that ignites the powder. Powder : Fast-burning propellant that is ignited by the primer explosion; the gases released create a pressure in the case that pushes the bullet out.
Case : Brass, aluminum, or steel container that houses the primer and powder while the bullet is seated in the open end; sometimes referred to as shells or brass. Bullet : The projectile that leaves the barrel of the gun and moves toward your target. Within each caliber, you will notice that there are certain bullet weights you see more often than others.
These are the weights most commonly offered by manufacturers, though you may occasionally come across a less common weight that is usually made for specialty purposes. So now we know that there are different weights for bullets and that this is measured in grains, but what does it mean for the shooter? Well, the weight of the bullet affects its performance once fired, including effects on recoil and accuracy. Recoil — The big debate is whether bullet weight affects recoil.
Instead, we have to understand the relationship between bullet weight and recoil. Power factor is a measurement of the momentum of the bullet and is used primarily in competition settings to determine perceived recoil. It is calculated by multiplying the bullet weight by the velocity, then dividing by 1, Two different rounds could have different bullet weights and different velocities, but equal the same power factor.
To learn more about power factor, check out this post. Lighter bullets must travel faster than heavier bullets to reach the same power factor and therefore require more gunpowder. This means that the lighter bullet will spend less time in the barrel than the slower moving heavy bullet, causing a difference in perceived recoil. Accuracy- In general, you may find that your gun performs with better accuracy with a certain bullet w eight. This can differ from gun to gun and experimenting with different rounds is the best way to figure out what works best for you.
Home About Don F. So, what is Bullet Grain anyway? So, you're a new gun owner, and you are needing to purchase ammo for your new firearm. When you look at the box of ammo you see "grain" on the side, but you aren't really sure what that means. Trust us, that grain can make a difference when it comes to firing your weapon. The bullet grain or "gr" as it is sometimes seen, is the basic weight of the bullet. The grain does not refer to the amount of gunpowder in each bullet, it is the weight of the projectile that fires from the barrel aka the bullet.
Each and every bullet manufactured today is classified based on their weight in grains and the range of weights is a lot bigger than you may think.
The lightest bullet grain is 17 grains, i. Not most of your standard bullets won't be seen in this range of grains, i. Below you will find the advantages and a few disadvantages of using both a heavier grain and a lighter grain. This is fair, as recoil can impact your ability to make rapid follow up shots, and if nothing else, more recoil means sore shoulders at the end of the day. Bullets with different grain weights might feel different as you shoot them. Typically, those who shoot lighter-weight bullets find that the recoil feels snappier.
Conversely, heavier rounds have a sort of pushing recoil. Just like some people prefer some foods to others, your AR might prefer some grain weights to others. It can be a minute difference, but you might notice a difference in the elevation of your groupings, or you might find that your rifle cycles more efficiently with some grain weights than others. This allows you to dial in your rifle and ammo set up to ensure optimal accuracy and performance for your needs.
We also offer precision iron sights that are meant to mount seamlessly on your laser modules. Order your RailScales AR accessories today. Bullet Grain Basics Essentially, the grain count of a round is a way to measure the size of the bullet. Hunting Not unlike self-defense, grain weight is less important than penetration and expansion. Precision Target Shooting In many cases, those who are shooting long-range or at precision target shooting competitions will rely on match grade ammo.
How Grain Affects Recoil Of course, most shooters are concerned about how a given round will affect their perceived recoil. Join our newsletter.
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