Patent No: US11209375 B2

Get the Perfect setting for your brass, everytime, in seconds!

Annealing brass cartridge cases with AZTEC video

Get it right with this simple 4 step process:

  1. Use the AZTEC Settings page to find your Pilot number and Suffix (formula) for your brass.
  2. Use the ANALYSIS function in AZTEC and enter in that combination.
  3. Insert your sacrificial piece of brass and hit the START button.
  4. Write down the annealing code which will be generated for later.
  5. Start Annealing. No guesswork required. 

When we first launched our MARK I annealer, it included a suite of programs. These programs varied in power and time and an extensive list of settings was created by us, in our lab, from tens of thousands of cases received from customers all over the world.

These settings are now referred to as the STANDARD mode.

If your case was not listed in our settings exactly as noted in the settings table, there was a chance the program may not be suitable for your brass and it would have to be sent to us for testing, a service we offer free of charge.

Variables included:
  • Different brands
  • Different Lot numbers
  • Neck turning

AZTEC Mode takes care of these variables, all you need to do is tell it what you are annealing (done via Analyse code) and it applies the right formula to your brass during the analysis process.

Essentially, with AZTEC, the machine has truly become a SMART annealer.


AZTEC mode has become the default mode of operation for all MARK II annealers and comes included with the unit.

If you have a MARK I annealer and wish to use AZTEC it is an optional upgrade and can be unlocked with the purchase of an unlock key.


How to install/unlock AZTEC:

The AZTEC software is included with the latest updates to the annealer. It will appear as an option which will be locked unless an unlock key is applied. Use these steps to unlock:

  1. Connect your annealer to your PC/Mac via the provided USB cable (any USB Cable from a printer should work if you have misplaced it). Your computer should automatically start downloading the drivers to allow the annealer to communicate with it. Let this run in the background.
  2. Download and install our software updater program from the downloads page here. Once you have installed it to your computer you will see a desktop icon/app with our logo which you can then open.
  3. After opening the program ensure you have a connection to the internet and select "Check for updates" the program will automatically connect to our update server and download the latest files to your computer. This may take several minutes. Once it has finished, a message will display saying to "close this window to continue".
  4. With the updates downloaded select "Update annealer". When the annealer detects a connection to the annealer it will allow the "Start annealer update" button to become active. Start the update and wait for both the SLAVE and MAIN portions to complete. (If it gets stuck at SLAVE click the "Start annealer update" button again. if it still pauses here contact us)
  5. At the end of the download it will prompt you to enter the unlock key. Enter the code and then the program will connect to our server, apply the code and then unlock your annealer.
  6. Cycle the power on the annealer and then AZTEC should be unlocked.



Basic operation and selecting a function

AZTEC is self-prompting and very simple to use with minimal technical expertise. Once AZTEC has been installed into your annealer, the start-up display will show:



For all selections the cursor is controlled by the ( - ) and ( + ) buttons. To select the desired mode (AZTEC, AMP MATE SETUP or STANDARD), move the cursor so that the desired mode is pulsing then press (START).

To go back a screen or to exit a mode press and hold the ( - ) Button and then press (START)

Selecting STANDARD will activate the original software with the original programs. Note: AZTEC generated annealing codes must not be used in STANDARD mode. The two systems are completely different.

Selecting AMP MATE SETUP will allow you to adjust parameters within the AMP MATE if you have one connected.

If you have selected AZTEC, firstly "Patent Pending” will show, and then the following options: ANALYSE, and RUN. Use the + button to scroll to your choice, then press Start to select.

Analysis mode

Select Analysis mode from the AZTEC menu

The display will show "ENTER PILOT NUMBER”, with three zeros and the suffix 'A' by default. Insert the correct pilot into the annealer.


If your cartridge does not appear, it is because we have never received samples. We are happy to add new cartridges to our tables. For instructions on sending samples, click here

Note: The actual pilots remain the same as for our standard programs. Those same pilots have been assigned a three-digit Analyse code with a single letter suffix. This code instructs the annealer as to which cartridge it is analysing. Some of our pilots have a B prefix engraved on the top such as B29 for 300 Win Mag. Please ignore that B. It just stands for "belted” and has no relevance to the AZTEC codes.

To enter the Analyse code, use the ( - ) and ( + ) buttons to change the value and the (START) button to enter it.

If at any time you make an incorrect entry, just hold down – and then press Start at the same time. This will take you back to the main menu. Start again.

For example, Pilot #11 should be entered as: 011 (Letter)

Once the correct Analyse code is entered, the display will show "ANALYSE” This means it is ready to go. Insert your sacrificial case into the annealer and press (START). The annealer will start heating the case. You will hear the annealer running and then stop.

Do not remove the case until the red Start light goes out.

Take care when removing the case from the annealer as it will be VERY hot. Make sure you have a suitable heat proof tray to deposit it in. It is also useful to have a pair of pliers handy. The case will have heated right up to melting point. Depending on the case shape, occasionally they can stick a little in the pilot. Note: ANALYSE mode will not harm your annealer. Make sure to remove the case after the red light goes out and eject it from the shell holder. Otherwise heat will transfer to the brass shell holder grip, which may become uncomfortably hot.

Once the red Start light goes out the display will show a four-digit Code number, and "USE” will be pulsing.


Note: the annealing code generated is specific to the brand, lot number and neck wall dimensions of the sacrificial case. If you wish to anneal a different brand or lot number of the same cartridge, you must analyse another case for that batch i.e. Lapua 308W will be different from Remington 308W.

The annealing code will not be stored to memory in the annealer. If you wish to carry straight on with annealing a batch of cases, select "USE”. Now "RUN” will be displayed with the code. Beside the code will be a 0 and a * program lock. See "Advanced functions” for an explanation.

Insert the first case and press Start to activate "RUN”, and your first case will be annealed. This display will remain for the annealing session. Anneal each case by pressing Start, as with our standard programs.

Note: in all instances AZTEC will anneal quicker than our Standard programs for the same case. This is because it operates in a different mode. It will also sound different. You won’t hear the familiar "tick-tick-tick” that you are used to.

If you are starting a new annealing session and already know the code for your cases, there is no need to sacrifice another case. Just select RUN from the starting menu. Then insert the correct pilot, enter your code and start annealing.

Selecting the sacrificial case

It is important that the sacrificial case is representative of the cases you are going to anneal. The two most significant factors are neck wall thickness and case weight. If cases have been accurately neck turned that makes the task simple. If not, use a ball micrometer to check neck wall thicknesses. We suggest checking say ten cases and selecting an average representative.Ensure that the case necks and mouths are round. Out-of-round necks will generate erratic annealing Run codes.

For more detail on this process click here

There is some debate about the merits of sorting cases by weight for competition shooting. We can’t comment on the benefits or otherwise on downrange accuracy, but we have found that case weight affects the correct annealing setting more often than not. We always sort customer samples for case weight as part of our laboratory procedure when calibrating standard program settings. You don’t need the most sophisticated scales for this task. We use a simple digital scale accurate to 0.1 g. We are not looking for tiny variations. We treat anything over 0.5 gr. as potentially significant. Two grains or more will frequently affect the annealing outcome. For hunting cases the difference is inconsequential. For competition, every bit matters.

Provided the brass is generally of good quality, there will be minimal variation in annealing across a whole batch if the best median case is selected as the sacrifice. With match quality turned and sorted brass there should be virtually no annealed variation.

We recommend that the sacrificial case should be fire formed and unsized. That is when cases should be annealed in the reloading cycle. There can be minor but significant differences in the code which AZTEC will allocate between sized and unsized cases.

We have found no difference in the code allocation using clean or dirty cases. We have also found that trim to length dimensions (within reason) have no effect on the code allocation.

Advanced Functions

As mentioned in "Analysis mode”, after a sacrificial case is analysed and USE is entered, the display will show RUN with a 0 and a * program lock to the right. The 0 gives the user that ability to customise their annealing even further.

To access the 0, firstly the * program lock must be opened. Just hold down the + button for two seconds and the * will disappear. Now the +/- buttons can be used to select up to six incremental adjustments up or down. (+) = more power for a softer finish and (-) = less power for a harder finish. These adjustments have been calibrated to give the same annealed hardness (HV) increments regardless of the cartridge. This means that the HV value per step is the same for say a 22 Hornet or a 338 Lapua Magnum. Each step represents approx. 2.5 HV, so that four steps will give approx. 10 HV up or down.

We always recommend that the ANALYSE generated code is used, because in our opinion it gives the optimal neck and shoulder annealed hardness. We do understand however that many reloaders will appreciate the ability to experiment.