Home > Blog > Need AR-15 Ammo? Where to Find the Lowest Prices Online

Need AR-15 Ammo? Where to Find the Lowest Prices Online

AR-15 AmmoChoosing the right ammo for an AR-15 involves a number of considerations. Fortunately, one website can meet all your needs and do so at low prices. Let’s begin with a quick guide about how to choose the right ammo, and where to find it on your favorite supplier, DEGuns.net.

What to know about the AR-15

Military experts and veterans, including Navy SEAL Dom Roso, say there are few better options for home defense than the AR-15. It is accurate, effective, easy to learn, and reliable. It also makes a fun choice for short and long-range target practice, and competitive shooting. It is a solid hunting gun, and popular choice for farmers and ranchers who want to control predators while working in remote areas. View AR-15s as well as parts and accessories on DEGuns.net here.

How to Choose Ammo for your AR-15

The AR-15 is chambered for .223 Remington or 5.56 NATO rounds. You can check to see which your AR-15 is chambered for by looking at the barrel. The number should be stamped into the metal along with the barrel twist. The two cartridges are identical, but the 5.56 can be loaded to higher pressures than the .223.

View ammo on DEGuns.net.

How to Choose Between 5.56 and .223 Rounds

The .223 is a civilian round, and meets requirements set by SAAMI, the organization that sets standards for gas pressure and dimensions. That being said, it is best to follow this chart when choosing rounds for your AR-15.

  • 5.56 chamber: Can fire both 5.56 and .223
  • .223 chamber: Can fire only .223

A 5.56 can be fired from a .233 chamber, but you are likely to come to regret doing so. The .223 chamber won’t let a 5.56 expand as much as it would in its own chamber, and that can lead to a number of problems. You can blow a primer, the part that ignites the shot, back into the receiver, the part that houses the hammer. This can reduce the reliability of your shot. It increases the number of failures to eject because the expanded casing can get stuck in the chamber.

Barrel Twist

Barrel twist is the rate the bullet will rotate 360 degrees over the distance it travels in inches after being fired. Bullet rotation matters in the same way putting strong spin on a football while throwing it matters. It can make a noticeable difference in accuracy and precision.

How To Determine Your Barrel Twist

You should be able to find this information stamped in the metal of your gun’s barrel. You could see a ration of anywhere from 1:7 to 1:12 inches. The way to read this is that the bullet will spin 1 rotation over X inches. A 1:7 barrel twist means that the bullet will complete one rotation every 7 inches.

Chart For Finding Ideal Barrel Twist

You should recognize barrel twist, but the weight of a bullet is measured in in a unit called “grains”. One pound equals 7,000 grains, and there are 437.5 grains in an ounce. The grains number on a box of ammo or online listing refers to the weight of the bullet, not the propellant.

Bullet Weight Twist

40-grain 1:12

55-grain 1:9

62-grain 1:8 or 1:7

77-grain 1:7 or 1:8

80-grain 1:7

The military generally uses heavier grain bullets in its tracer rounds. For normal cartridges, you will probably see 55-grain and 62-grain bullets. Those are usable in 1:7 and 1:9 barrels, and you are probably not going to notice the difference in performance up to 300 yards.

It is believed that a faster rate of twist means that you will wear out your barrel sooner, however if you enjoy long-range target shooting, the high twist rate will deliver effective results.

Twist Rates and AR-15 Manufacturing

Most manufacturers do not offer different rate of twist choices when it comes to a particular AR model. That means that each model line will have a rate of given rate of twist, so this is something to know before choosing the model of AR-15 you want to purchase. Know what you want to use the AR for, and determine the best twist rate for you, then weigh that against the drawbacks before choosing a manufacturer from which to purchase an AR-15.

A Brief Word On Bullet Types

Bullet type is divided into two major families: the full metal jackets (FMJs) made famous by the Stanley Kubrick movie of the same name, and the hollowpoint/softpoint (HP/SP) variety.

The best type to use depends on the purpose of your ammo purchase. Full metal jackets are a better choice for plinking, or target practice on an object that will deliver an audible rapport, or “plink” when hit with a round. Hollowpoint/softpoints are preferable for home defense. This is because the hollowed out tip of these bullets displaces more tissue, increases shock to the victim, and overall stops the target more reliably than a round that delivers clean penetration.

Another acronym to be aware of with regard to bullet types is BT, which stands for Boat Tail. Boat Tail bullets taper to an aerodynamic shape at the end as opposed to cutting off cleanly. To provide an example of a translated bullet acronym, an FMJBT is a Full Metal Jacket Boat Tapered round.

Advantages and Disadvantages of Boat Tailed Rounds

Boat tapering was intended to increase accuracy, and provide a far more stable flight. Today it is not uncommon for riflemen to demand the high performance of a boat tailed round, particularly if they shoot competitively.

The simple truth is, there aren’t many disadvantages to boat tapering. The one thing that you may want to be aware of is over penetration. This is when the bullet goes straight through the target, and just keeps on going. Under certain conditions, this could be ineffective or dangerous.

You should also double-check the rules of your hunting grounds, shooting range or public round when it comes to choosing rounds. Many of these places do not allow the use of any full metal jacket bullets.

Find all your AR-15 Ammo on DEGuns.net

DEGuns would be happy to explain everything you need to know about AR-15 ammo from barrel twist to the style of rounds. You can find fantastic prices on all your needs by calling (402) 875-6500 or visiting our website online here. We look forward to hearing from you!