This has to do with how well a bullet is stabilized due to variables such as total grains of bullet weight, spin rate, and barrel length. Certain bullet weights perform best with specific twist rates. So what does all of this have to do with finding the best ammo for your AR-15? A twist rate of 1:12 is less common but is still out there. The most common twist rates are 1:7, 1:8, and 1:9. For example, a bullet fired from a barrel with a twist rate of 1:9 will spin one revolution every 9 inches in the barrel. The twist rate of a barrel tells you how many inches it takes the barrel to spin the bullet one revolution. The twist rate will be stamped or engraved somewhere on the barrel. If you aren’t sure of your twist rate, just check your barrel. FMJ ammo is great for plinking and target range use.īefore starting your ammo selection process, you should always keep the twist rate of your barrel in mind. This is accomplished without leaving significant amounts of metal behind in the bore. This so-called “jacket” allows for increased muzzle velocities when compared to bare lead. Often used in the most affordable types of ammunition, full metal jacket bullets feature a lead core encased in a shell of harder metal such as gilding metal. This is especially good to have in home and personal defense situations which can occur near innocent bystanders. The expansion of hollow points helps to reduce over-penetration that could lead to unwanted damage beyond the target. Home and personal defense purposes generally call for the use of hollow point bullets. With a great ballistic coefficient and less drag than traditional hollow points, hunters can be incredibly accurate and precise with their shot placement on coyotes, groundhogs, and other varmints, and small game. They expand upon impact in a more controlled way which reduces damage to fur and meat. Soft point bullets are most commonly used for hunting purposes. There are more types than those three, but having a better understanding of these three will help you out a lot. Three of the most common types of bullets are soft point, hollow point, and full metal jacket. Check out the list below to arm yourself with the knowledge to make an informed choice. There are a few important factors to think about and consider when choosing AR-15 ammo. Factors to Consider Before Buying AR-15 Ammo
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