6mm ARC - Light bullet tests (58-90gr)

Published on April 7, 2021
Duration: 51:19

This guide details a comprehensive light bullet test for the 6mm ARC cartridge, conducted by an expert reloader. It covers bullet selection (58gr-90gr), powder choices, load development considering rifle-specific throat length, and accuracy testing using advanced equipment. The expert emphasizes meticulous data collection, observation of pressure signs, and comparison of reloading press performance, offering valuable insights for precision riflemen seeking optimal loads.

Quick Summary

Expert reloader Johnny conducted extensive 6mm ARC light bullet tests (58-90gr), finding the 68gr Berger Flat Base Target bullet achieved exceptional accuracy (0.43-inch groups). He detailed load data, observed pressure signs with specific powders, and compared reloading presses, concluding both Hornady and Lyman presses yielded similar accuracy.

Chapters

  1. 00:00Introduction to 6mm ARC Light Bullet Tests
  2. 00:35Bullet Lineup Overview
  3. 02:12Powder and Load Data
  4. 05:03Reloading Press Comparison
  5. 07:54Range Testing Setup
  6. 08:24Testing 58gr to 68gr Bullets
  7. 19:24Pressure Signs and Malfunctions
  8. 24:43Testing 85gr to 90gr Bullets
  9. 28:13Final Results and Press Reveal

Frequently Asked Questions

What bullet weights were tested for the 6mm ARC cartridge?

The 6mm ARC light bullet tests covered a range of weights from 58 grains up to 90 grains, including specific bullets like the Hornady V-Max (58gr, 65gr, 75gr, 87gr), Sierra Varminter (60gr), Sierra Blitz King (70gr), Sierra Game King (85gr), Berger Flat Base Target (68gr), Bart's Ultra (68gr), and Nosler Ballistic Tip (90gr).

What were the key findings regarding accuracy in the 6mm ARC light bullet tests?

The 68gr Berger Flat Base Target bullet achieved exceptional accuracy, producing groups as small as 0.43 inches. The 58gr V-Max and 60gr Sierra Varminter also showed promising initial results. The 90gr Nosler Ballistic Tip performed well with specific powders.

What reloading presses were compared for the 6mm ARC tests?

The video compared the Hornady Lock-N-Load Classic single-stage press against the Lyman All-American 8 Turret Press. After loading 50 rounds on each, the testing revealed that both presses produced similar accuracy results for the 6mm ARC loads.

What safety concerns were highlighted during the 6mm ARC reloading tests?

The expert noted significant pressure signs, such as ejector smears and raised brass, when using certain powder and bullet combinations (e.g., 75gr V-Max with Vihtavuori N133). He also experienced cycling issues with faster powders and a suppressor loosening, emphasizing the importance of careful load development and equipment checks.

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