Reloading for the 5.56 NATO (.223 Remington) Tutorial Part One

Survival Weapons $ Tools

This article covers the basics of reloading for the 5.56 NATO (.223 Remington), including how to choose the right equipment, component explanations, and the prepping of brass for accepting a powder charge and slug.

*Reloading ammunition is a skill and an art. We suggest anyone interested in reloading train with a professional first.*

Scarcity of  Ammunition

I have noticed a scarcity of .223 Remington rounds lately. Perhaps, the “guv’mint” is hoarding them. Perhaps, the ammo manufacturers are driving the prices up.

Maybe, after the last gun ban scare, households are buying it up as fast as it hits the shelves while they still can. (Smart move) Or, it may be that Santa Claus is coming and giving all the boys and girls that were good a brick of .223 to play with. (Still hoping here) Whatever the reason is, no matter where you find it, the price has gone WAAAAYYYY up since last year.

This cost prohibition, coupled with the fact that the .223 is the most common round used in survival firearms (read AR-15 and Mini 14) prompted me to ask the bosses’ permission to write about handloading them. They graciously granted permission, and here we are. We will divide this article into a three part series. Reloading is a tedious task, and to overload a person with too much information on their first batch would be asking for disaster.

I have personally seen the bolt of an M1 fly out of the receiver and stick in a man’s chest on the range due to improper reloading; he lived, but was in terrible shape for a while.

Component and Equipment Selection for Reloading

The first segment of this series on reloading will be about component and equipment selection, and brass preparation.  Component selection is almost as important as the actual building of the round, but not NEAR as important as equipment selection. Remember, once you buy this equipment, YOU will be working with it! You must select it to fit YOUR needs.

Reloading press


Press Selection

The center piece of all reloading is the press. Press selection is divided into two types: Single stage and progressive. Single stage is slower, but as you ARE going slower, people tend to have a closer eye on quality control, and therefore, get better ammunition out of them.

Progressives are much faster, as once you get each stage loaded, a round flies out of it with EVERY pull of the lever! You only have to stop to resupply the components. My personal needs as a competitive shooter called for very consistent ammo.

Tight quality control is in order here, so I went with two single stage presses, and they have served me well over the years. I have often wished for a progressive for higher production, but I am satisfied with what I have.

Reloading scaleChoosing the Right Scale

Next are scales, digital or balance type? I prefer the balance type, as there is less to go wrong in a survival situation.

No batteries to fool with, no interference from an EMP (Electromagnetic Pulse) and they can be used in the dark.

Brass trimmer

Brass Trimmers

Then, we have brass trimmers. Your brass will need to be periodically trimmed to ensure it doesn’t grow into the rifling and cause an over-pressure situation.

I have always used the manual type, once again the same pros and cons as the scale scenario. They make electric models, but in my opinion, they are useless in a survival situation when the grid is down.

Brass tumbler for reloading


Brass Tumblers

The consideration of brass tumblers must come into play somewhere in the conversation. I use the dry type myself, as they seem to be less messy.

However, the wet type seems to get the shells cleaner. Either is suitable for this application, as long as the brass gets cleaned.

Powder measure for reloading


Powder Measure

Powder measures are extremely effective in speeding up production; otherwise, you’re looking at using a trickler, which is very precise, but extremely slow.

Capper for reloadingCapper

Now comes mention of the capper, this little jewel does the job of installing the primer without blowing your fingers off! I use a manual primer, it’s slow, but there are NO screw ups with this system.

Some presses offer an automatic primer, this is handy, but if loaded improperly, can install primers upside down. Sometimes it can ruin a primer by installing it sideways and crushing it.

Die Sets

Last and most important of the necessary equipment is the die set we will use to build our project. There are many manufacturers of die, some include a shell holder to help with the reloading process, and some do not. I cannot, in the interest of keeping honest and unbiased as an author, recommend a manufacturer, but I have had great luck with Lee and RCBS dies.

Don’t let all these decisions overload your mind! Many manufacturers have a starter kit that includes most of these items in it. And besides, we haven’t even begun to select our components, which consist of brass, primer, powder and slug.

Brass for reloading



Brass we will be using for our project will be just some old common junk we found at the firing range and picked up for use. As long as it isn’t damaged, brass can be used repeatedly!

It does eventually wear thin and have to be discarded, so looking for damage when reloading is paramount in brass preparation.

Brass can also be bought in a fired condition or brand new. Brand new being the most expensive, but you have to cull a lot less brass that way.

Primer for reloadingPrimers

Primers are crucial to reloading. Primers perform the function of starting the whole firing process. Without a primer, we have no bang from our modern metallic cartridges.

Primer selection is subjective; I prefer the softer brass primers, as the harder steel primers require more force to fire. This is not a problem in a properly maintained firearm, but in a survival situation, firearm maintenance can be thrown to the wayside, so we eliminate that problem from the equation.


Powder is the next choice we must make. For our project, we will be using IMR 4895. I like this powder as it is readily available, cheap, and versatile. It is not the hottest powder made, nor the cleanest.

You can choose from several manufacturers, all one has to do is research online to find a manufacturer and powder to your liking.

Deciding on a Slug

Finally, the decision making is over….. or is it? We now have to decide on a slug. For our project I have selected a 69 grain hollow point boat tail from Sierra bullets (Sierra part number 1385), but the slug is designed for .223 caliber assault rifles specifically.

I will explain this later in the series, but many other selections are available. Most commonly found are Hornady, Sierra, Speer, and a host of others.

Consideration in slug selection must include use; different slugs have different flight characteristics, energy delivery, weights, shapes, and a mess of other considerations.

Brass Preparation

Now, on to the actual working parts. Brass preparation is definitely the most time consuming part of reloading. First, we take our tumbler, and the media of your choosing, and our brass.  Mix them all up and let tumble for at least an hour. This cleans the brass and makes it easier to inspect. It also removes residue from the inside of the case.

After a good tumbling, inspection can take place. Look for cracks in the case, bulges, backed out primers, dents, or anything that you suspect might be abnormal. These are all warning signs of potential hazards down the road.


Next, we go to our press, and screw in our re-sizing die. Remember to lube the cases before re-sizing! They will hang up in the die if you don’t! A light coat of lube is all that is needed and can be accomplished with either a lube pad or one of the various different spray on types.

If you over-lube, remove the excess, as it will cause a vacuum in the die and create dents in the case. It will literally suck a dent in the metal!  This is a two for one process, as it re-sizes the brass and deprimes the little dude at the same time! Set your die deep enough to knock the primer out at the bottom of the stroke. It’ll fall out and land in the little bin at the bottom of the press.

Case trimming


Case Trimming

Next order of business, case trimming. We set our case trimmer for the proper length. For our .223 rounds there is a MAX case length and a trim length. Take your calipers and measure case length AFTER re-sizing. If it is greater than the MAX case length of 1.760” then it must be trimmed. If it is not trimmed, there is the potential of the case swelling up into the rifling between the barrel and the slug.

This will impede the slug’s progress down the barrel, thus increasing barrel pressure and causing a potential explosion in your face!! It is recommended to trim ALL cases to 1.750” but it is only required for those over 1.760”.

Deburring the Case

After trimming, we begin the process of deburring. This is the slow tedious part. You MUST deburr the case mouth….ALWAYS!! For two reasons: one, any little burr against the bullet can affect accuracy. A .223 is a relatively small bullet, and the smallest impedance can throw you off a LONG way down range.

The other is in fact, the very same reason we trimmed our case length…. preventing a dangerous over-pressure situation. Also, as an option, you can deburr the primer pocket too. This makes for more uniform ignition and consistent shooting.

It is not required, but recommended for both reliability (very important in a firefight situation) and accuracy (consistent ammo is accurate ammo.) After the deburring process has concluded, we re-prime the brass with our hand primer (primers used in our project load are CCI 400 primers).

This brings us to the conclusion of  part one of the Reloading for the 5.56 NATO (.223 Remington) Tutorial series.

See the second part of our tutorial here >>

Reloading – Kits

3 comments… add one
  • Craig Sayner

    Great article. I have found that when you tumble your brass put a dryer sheet into the tumbler, the sheet will come out black. It helps keep your medium clean.

  • Craig Sayner

    Brand new to reloading. I have an AR 15 that is chambered for 5.56/2.23. I see on PMC ammo web site, it says they have a 5.56 NATO and a 5.56. Knowing military brass has thicker walls does that mean two different cases as stated above are different? 5.56 NATO thicker case walls and the 5.56 regular thickness walls? If I put a 223 charge in military brass it will cause excessive pressure. I’m having problems finding loading data for 5.56. Not sure if there are 2 different 5.56 cases, regular and NATO (military).

    • Blake

      Both the 5.56 and the .223 brass will work as a .223 round but you need to Google what is the difference between a 5.56 and a .223 round, you will find a lot of reading on the subject ok. Enjoy reloading and shooting your own ammo.

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