Annealing Made Perfect (AMP) — Technical Overview

When Annealing Made Perfect (AMP), a New Zealand-based company, first unveiled its original induction annealing machine at SHOT Show 2015, it was big news in the reloading world. This was a real breakthrough — an induction annealer running on electricity that was fully programmable. No more flames to fuss with. The advent of the AMP annealer was a true “game-changer” for the shooting enthusiasts who reloaded their ammo.

The AMP system is based on smart science and modern technology. Right from the start, AMP invested in advanced lab equipment (such as gear for Micro-Vickers hardness testing). AMP also worked with independent outside metallurgical laboratories. And AMP invited shooters from around the world to send in sample cartridge cases. AMP accumulated a huge archive of cartridges from .17 Hornet to an array of .50 BMG wildcats and everything in-between. AMP’s archive includes multiple brands and even different lot numbers of the same cartridge. AMP now offers the most highly developed and precise consumer annealing system on the planet. That is because of the amazing amount of R&D behind the product, plus the use of advanced technologies.

Annealing Under the Microscope — Informative Articles

Alex and Matt Findlay have produced a series of articles called “Annealing Under the Microscope”. The first of these was released in July 2017. Part 1 was a general explanation of annealing, and busted a number of myths. It examined the repeatability of annealing over multiple reloads, and conducted a series of tensile bullet pull tests.

FULL ARTICLE LINK: Annealing Under the Microscope, Part One

Annealing Different Brands of Brass
Part 2 of Annealing Under the Microscope covered an important topic — annealing for different brands of brass. This article examines the reasons why different brands of the same cartridge can require different annealing settings. The article also reveals that lot to lot variations of the same brand of brass can make a big difference.

FULL ARTICLE LINK: Annealing Different Brands of Brass for Same Cartridge Type

AZTEC Annealing System — AMP Annealers become Smart Machines
In late 2017, Alex and Matt started the development of their revolutionary AZTEC system, which in effect transformed AMP annealers into SMART annealers. It meant that individual customers could analyse their own cases with laboratory grade accuracy without the need to send samples to the AMP lab for calibration.

Part 3 of Annealing Under the Microscope was released in July 2018 after nearly 12 months of R&D on AZTEC. It focused on how to best utilize this new self-calibration capability. It also highlighted the difference between several “premium” brands of brass compared to cheaper alternatives.

FULL ARTICLE LINK: AZTEC Control — “Smart” Self-Calibration Annealing Technology

Benefits of Precision Annealing — Accuracy and Repeatability
Part 4 of the series was released in September 2019. It focused on the true benefits of accurate annealing, and the arguments for annealing every reload. The study identified sizing accuracy and repeatability as the key factor. This article also revealed the first prototype of AMP’s new auto bullet seater with seating pressure data capture.

FULL ARTICLE LINK: Benefits of Precision Annealing — Accuracy and Repeatability

Proof on the Target — Down-Range Benefits of Annealing
In Part 5 of the series, AMP’s experts focus on the real world, down-range benefits of annealing, turned out to be a much more complex process than AMP initially planned. Accordingly, Part 5 was conducted in three stages, with three detailed write-ups.

The Part 5, Stage 1 paper examined sizing accuracy of annealed vs un-annealed cases, taking two sets of three identical Peterson Cartridge .308 Winchester cases through twenty (20) reloading cycles. For every cycle, cases were measured both fire-formed and as re-sized. With each cycle the cases were measured for case length, shoulder bump, neck OD, and head OD.

FULL ARTICLE LINK: Annealed vs. Un-Annealed: 20 Load Cycles with .308 Win

Field Testing in Tennessee — Proof on Target
The Part 5, Stage 2 article covered detailed ballistic testing using multiple rifles, cartridges, and shooters at the Strategic Edge range in Tennessee.

The Tennessee testing sessions accumulated a wealth of data on velocity spreads and group sizes right out to 1,000 yards. The evidence showed a clear advantage for annealed brass, both for average group size and average Extreme Spread for the groups shot with AMP-annealed cases.

FULL ARTICLE LINK: AMP Annealing Tennessee Long Range Field Testing

Underground Testing with Lou Murdica
Lastly, AMP’s Part 5, Stage 3 paper featured testing by Lou Murdica at an underground range in California. We have previously shown a video of Lou shooting one case, then reloading it and shooting the same case into the same hole at 100 yards.

This time he repeated the feat, shooting one un-annealed case twenty times into the one hole. Then Lou produced another even smaller 20-shot group, shot with a case which he annealed before every shot.

FULL ARTICLE LINK: AMP Annealing Underground Testing

Enjoy These Technical Articles from AMP Annealing
Collectively AMP’s “Annealing Under the Microscope” series represents a remarkable body of outstanding work. Whether you anneal your cartridge brass now, or just want to learn more about the benefits of annealing, we recommend you take a look at this series of informative articles.