TESTED: NEW 6GT Brass from Lapua

Published on August 2, 2025
Duration: 7:51

This video provides an in-depth review of new Lapua 6GT brass, detailing its precise manufacturing specifications and performance in competition and hunting scenarios. F-class John from Ultimate Reloader highlights the brass's consistency in length, weight, and neck wall thickness, emphasizing its suitability for both 'no-turn' chambers and traditional reloading. The review includes performance data from Sig Cross and Bergara rifles, offering insights into the 6GT cartridge's place between the 6.5 Creedmoor and 6 Dasher.

Quick Summary

Lapua's new 6GT brass is highly praised for its exceptional consistency, featuring an average case length of 1.796 inches, an average case weight of 157.887 grains, and a precise neck wall thickness of 0.0128 inches. This brass is ideal for both competition and hunting, offering excellent performance in 'no-turn' chambers and a balanced design for the 6GT cartridge.

Chapters

  1. 00:04Introduction to Lapua Brass
  2. 00:20F-class John & Ultimate Reloader Intro
  3. 00:24The 6GT Cartridge
  4. 00:54Brass Specification Analysis
  5. 01:02Case Length Measurements
  6. 01:23Case Weight Analysis
  7. 01:44Neck Wall Thickness
  8. 02:53Water Capacity Test
  9. 03:10Loading and Firing
  10. 04:36Rifle Performance: Sig Cross
  11. 05:10Rifle Performance: Bergara
  12. 05:27Rifle Comparison: Sig Cross vs. Bergara
  13. 05:55Where Does 6GT Fit?
  14. 06:03Shoulder Angle Comparison
  15. 06:39Final Thoughts on Lapua 6GT Brass
  16. 07:00Call to Action & Outro

Frequently Asked Questions

What are the key specifications of Lapua's new 6GT brass?

Lapua's 6GT brass boasts an average case length of 1.796 inches with very low deviation, an average case weight of 157.887 grains with minimal spread, and a neck wall thickness averaging 0.0128 inches, known for its exceptional consistency.

How does the 6GT cartridge compare to the 6.5 Creedmoor and 6 Dasher?

The 6GT cartridge sits between the 6.5 Creedmoor (30° shoulder) and the 6 Dasher (40° shoulder), featuring a 35° shoulder angle. This design provides a balance of case capacity, good speeds, and compatibility with a wide range of bullets, making it versatile.

What kind of accuracy can be expected with Lapua 6GT brass?

In testing with a Sig Cross rifle, Lapua 6GT brass yielded groups around 0.53 to 0.55 inches. A Bergara rifle showed excellent consistency with an SD of 4.6 and an ES of 10.3, indicating high accuracy potential for the 6GT cartridge.

Is Lapua 6GT brass suitable for 'no-turn' chambers?

Yes, Lapua 6GT brass has an average neck wall thickness of 0.0128 inches. While it offers enough material for those who prefer to turn necks, it is also well-suited for 'no-turn' chambers due to its consistent dimensions, aiding in reliable bullet seating.

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