July, 15

Top 5 Most Popular AR-15 Ammunition: A Comprehensive Guide

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When it comes to owning an AR-15 rifle, selecting the right ammunition can make or break your shooting experience. With so many options available in the market, it's essential to choose a reliable and effective round that suits your specific needs. That's where understanding the most popular AR-15 ammunition comes into play.

Whether you're a beginner or seasoned shooter, knowing about different types of ammo can help you make informed decisions and get desirable results on the range or in the field. In this article, we will explore some of the most popular AR-15 ammunition currently used by gun enthusiasts worldwide. We'll discuss their unique features, benefits and drawbacks to give you a comprehensive overview of what each one offers.

So if you want to take your shooting game up a notch by using quality rounds that provide consistent performance and accuracy without breaking the bank – read on!

Most Popular AR-15 Ammunition: A Comprehensive Guide


The AR-15 is one of the most popular rifles in the United States, and for good reason. It's versatile, customizable, and easy to handle. However, with so many options for ammunition on the market today, it can be overwhelming to choose which one is best suited for your specific needs. In this article, we'll take a look at some of the most popular AR-15 ammunition available and help you make an informed decision.

The Basics of AR-15 Ammunition

Before we dive into specific brands or types of ammunition, let's go over some basics that apply across the board. The two main components of any round are its bullet and casing.


The bullet is just what it sounds like – a projectile that flies out of your rifle towards your target when fired. Bullets come in different shapes (such as hollow points or full metal jacket) which affect their performance upon impact.


The casing holds all other parts together until they're fired from your rifle's chamber; once it has been fired off then there remains only empty brass shell casings behind.

Popular Brands & Types

Federal American Eagle .223 Remington 55 Grain FMJ-BT

This brand offers high-quality rounds with consistent accuracy at an affordable price point compared to others in its class such as PMC Bronze Line 223 Remington Ammo 55 Grain Full Metal Jacket Boat Tail which can cost up to twice as much per round without offering significantly better performance characteristics than American Eagle rounds do!


  • Cost-effective option
  • Consistent accuracy

Hornady Frontier Cartridge .223 Remington

Hornady Frontier cartridges are specifically designed for use by shooters seeking reliable long-range accuracy with their rifles.

  • Long-range accuracy
  • Reliable function

Winchester Super-X .223 Soft Point

Winchester Super-X .223 Soft Point rounds are a popular choice for hunters in search of a reliable round that delivers consistent performance and accuracy. This cartridge is capable of producing a high level of energy transfer upon impact, making it an effective tool against larger game.


  • Effective energy transfer
  • Reliable hunting round

Comparison Table

Brand & Type Price per Round Benefits
Federal American Eagle $0.32 Cost-effective option, Consistent accuracy
Hornady Frontier $0.44 Long-range accuracy, Reliable function
Winchester Super-X $0.45 Effective energy transfer, Reliable hunting round


So there you have it – three great options for AR-15 ammunition depending on your specific needs! Whether you're looking for cost-effectiveness or long-range accuracy or even reliable hunting rounds that deliver consistent performance and effective energy transfer upon impact – there is surely something here to suit anyone's requirements with the added benefit being all these brands offer good value at their price points too!

Remember that choosing the right ammunition requires some research but this article has provided enough information to get started with evaluating most popular AR-15 ammunition available today based on factors such as cost-effectiveness, reliability under various conditions (e.g., weather), effectiveness against different types/sizes of targets (small-game vs large-game).


What is the most popular AR-15 ammunition?

The most popular AR-15 ammunition is currently the 5.56 NATO round. It was introduced in the US military in 1963 and has since become a standard cartridge for rifle ammunition used across many different platforms. The NATO designation for this round is SS109, or M855 if it's loaded with a steel penetrator tip, which increases its ability to penetrate barriers like body armor.

This bullet typically weighs around 62 grains and has a muzzle velocity of about 2,900 feet per second when fired from an AR-15 rifle barrel that's at least sixteen inches long. Many manufacturers produce this type of ammo today, including Federal Premium Ammunition, Hornady Manufacturing Company and Winchester Ammunition.

One reason why the popularity of this ammo hasn't waned over time may be its versatility: it can be used effectively for both hunting as well as self-defense situations due to its high velocity and accuracy characteristics.

Can you shoot .223 Remington in an AR-15 chambered for 5.56mm?

Yes – but with some caution! Both cartridges are very similar (the .223 being slightly smaller), so they can often be interchanged; however there are some important differences between them that should not be ignored.

The first difference pertains to pressure levels: the maximum allowable pressure level on commercial .223 Remington loads is lower than that of military-specification M193 or M855 rounds made using brass cases thicker than those commonly found on commercial offerings.

Another consideration relates to rifling twist rates: while these two calibers use projectiles with identical diameters (.224"), their optimal twist rates tend differ; generally speaking – rifles chambered specifically for either caliber will have barrels better suited towards achieving peak performance from one caliber over another.

Be sure to check your firearm’s owner manual before shooting anything other than what it was designed/properly marked for.

What is the best bullet weight for AR-15 rifles?

The choice of bullet weight depends on what you intend to use your rifle for, as well as its twist rate. The most common weights are 55 grains and 62 grains, although other weights can be found on the market. For example, a lighter projectile at around 50 or even 45 grain may be more suitable if you plan to do varmint hunting within ranges of less than say ~200 yards.

If longer range shooting is your objective then heavier bullets with higher ballistic coefficients would provide better resistance against wind drift and drop over distance – these may also require faster spins provided by barrels with tighter twists (1:7" being quite popular).

Ultimately, it's always best to test different types of ammunition in various loads before settling on one specific type – so that you can get a feel for how your gun handles each type.

Is steel-cased ammunition bad?

Steel-cased ammo has some pros and cons when compared to brass-cased ammunition. One advantage it has is its lower cost due primarily because steel cases are cheaper than their brass equivalents.

However this comes at certain trade offs; Steel cases will wear out chamber walls more quickly than brass casings- which means that they might not chamber properly or extract easily after repeated usage without thorough cleaning and maintenance checks.

Furthermore – many indoor ranges prohibit shooters from using them because spent cartridges cannot be reloaded efficiently like those made from brass material which is far easier/more effective in creating reloadable casings — shorter service intervals between cleanings might also mean increased workload/costs related thereby reducing overall savings per shot

Finally: It’s important to note that while there's nothing inherently wrong with using steel cased ammo (especially if cost savings are paramount) – brass cased rounds still tend perform better under certain conditions such as high volume shooting sessions where “malfunctions” become less of a factor in the grand scheme of things.

What is "green tip" ammunition?

Green tip ammunition refers to a specific type of round that has been loaded with a steel penetrator called ‘M855’- which makes it distinctly different from regular FMJ (Full Metal Jacketed) ammo. It's referred to as such because this projectile features a green color coding around its base, making it easy to identify.

This type of ammo was designed for use by military and law enforcement personnel, and is known for its ability to penetrate armor targets. However – while they are effective against certain materials such as Kevlar vests — civilian ownership can sometimes be restricted due the aforementioned armor piercing capabilities.

Some people still prefer using these rounds even though they might not find them particularly suitable in all-non self-defensive applications like hunting or plinking. And unless you really need an arsenal that can breach barriers at longer ranges – there's no absolute reason why this particular flavor should stand out above others on store shelves!

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