Is Anybody Custom Loading .22 GT? Diving Deep into a Niche Cartridge

Yes, a small but dedicated group of reloaders are indeed custom loading .22 GT. This niche cartridge, also known as the .22 Geissele-Tecnica, isn’t commercially available, meaning handloading is the only way to feed firearms chambered for it. Let’s explore the fascinating world of .22 GT custom loading and answer some frequently asked questions.

The Allure of the .22 GT: Why Bother?

The .22 GT was conceived as a high-performance .22 rimfire alternative or supplement to centerfire, designed to deliver superior accuracy and range compared to the .22 Long Rifle. Its proponents appreciate its flat trajectory, reduced wind drift, and impressive energy retention at longer distances. The case is based on the 5.56mm/.223 Rem case, necked down to .22 caliber. It can be an expensive endevour, but dedicated handloaders and custom gun owners seek to unlock the full potential of the .22 GT through meticulously crafted handloads.

Understanding the Challenges of .22 GT Reloading

Reloading the .22 GT presents a unique set of challenges that differentiate it significantly from reloading more common centerfire cartridges:

• Components: Obtaining cases is paramount. These are either sourced from spent .22 GT brass (which is usually from factory ammo, if available) or formed from existing brass, typically 5.56 NATO/.223 Remington. Projectiles are standard .224 diameter bullets, so those are readily available. Primers are standard small rifle primers.
• Case Forming: This is perhaps the most demanding step. It requires specialized case forming dies and precise execution to avoid crushing or damaging the brass. Annealing the case necks might be necessary to prevent cracking during forming.
• Powder Selection: Due to the case capacity and desired performance characteristics, selecting appropriate powders is crucial. Slower-burning rifle powders, typically those used in .223 Remington loads, are often experimented with.
• Precision: Given the pursuit of superior accuracy, meticulous attention to detail is essential throughout the entire reloading process, from case preparation to bullet seating.

Frequently Asked Questions (FAQs) About .22 GT Custom Loading

1. Where can I find .22 GT reloading dies?

Custom die makers or companies specializing in wildcat cartridges are the primary source. Whidden Gunworks, RCBS (through their custom shop), and Forster are examples of companies that may offer .22 GT die sets. Expect to pay a premium for these specialized tools. PTG (Pacific Tool and Gauge) is another popular choice for custom reamers and dies.

2. What kind of brass can be used to form .22 GT cases?

New or once-fired 5.56 NATO or .223 Remington brass is typically used. The brass should be in good condition, free from dents, cracks, or excessive wear. Some reloaders prefer specific brands of brass based on their perceived quality and consistency. Some prefer Lake City brass, while others swear by Lapua or Nosler.

3. What bullet weights and types are commonly used in .22 GT loads?

Bullet weights typically range from 40 to 75 grains. Popular choices include Sierra MatchKing, Hornady ELD Match, and Nosler Custom Competition bullets. The specific bullet selection depends on the intended use, desired ballistic performance, and the rifle’s twist rate. Heavier bullets usually require faster twist rates.

4. What powders are suitable for .22 GT reloading?

Commonly used powders include Hodgdon Varget, IMR 4895, Accurate 2230, and Vihtavuori N133. Experimentation is often necessary to find the optimal powder charge for a specific bullet and rifle. Start low and work up gradually, carefully monitoring for pressure signs.

5. Is case annealing necessary when forming .22 GT cases?

Yes, annealing is highly recommended. Forming the .223 Remington/5.56 NATO case into the .22 GT case requires significant necking down, which work-hardens the brass and makes it brittle. Annealing softens the brass, preventing cracking and extending case life.

6. What is the ideal twist rate for a .22 GT barrel?

A twist rate of 1:8 or 1:9 is generally suitable for stabilizing bullets in the 55 to 75-grain range. A faster twist rate (e.g., 1:7) may be necessary for heavier bullets. The optimal twist rate depends on the bullet weight and length.

7. Are there any safety concerns specific to .22 GT reloading?

As with any reloading endeavor, safety is paramount. Pay close attention to published load data, start with starting loads, and carefully monitor for pressure signs. Ensure proper case lubrication during case forming to prevent stuck cases. Due to its wildcat status, published load data will be limited, so approach with extreme caution.

8. What kind of velocity can be expected from a .22 GT?

Velocities typically range from 2800 to 3300 fps with 55-grain bullets. The actual velocity depends on the barrel length, powder charge, and bullet type. The .22 GT is known for its flat trajectory and high velocity compared to the .22 LR.

9. What are the advantages of the .22 GT over the .223 Remington?

While the .223 Remington is a far more common and versatile cartridge, the .22 GT can offer a unique combination of factors, especially in specific shooting scenarios. Some shooters find the reduced recoil appealing. Furthermore, it can be designed to work in AR-15 platforms with minimal modification compared to other alternative cartridges.

10. What are the typical costs associated with .22 GT reloading?

The initial investment can be significant due to the specialized dies and other equipment required. The cost per round is also higher than reloading more common cartridges due to the need for case forming and the relatively high cost of bullets and powder.

11. Where can I find reliable load data for the .22 GT?

Consult reputable reloading manuals and online forums dedicated to wildcat cartridges. Exercise caution when using load data from unofficial sources and always start with starting loads. Contacting the die manufacturer or gunsmith who built your .22 GT rifle can also provide valuable information.

12. Is the .22 GT worth the effort of custom loading?

That depends entirely on your needs and priorities. If you are seeking a high-performance .22 caliber cartridge with superior accuracy and range and are willing to invest the time, effort, and money into handloading, the .22 GT can be a rewarding endeavor. However, if you are looking for a cheap and readily available cartridge, the .22 GT is not the right choice. The .22 GT stands as a testament to the dedication of reloaders who are driven by the desire to push the boundaries of performance and explore the uncharted territories of cartridge design.