SCAR vs ACR Part IV

Published on October 26, 2011
Duration: 13:02

This guide details accuracy testing procedures for the FN SCAR 16S and Bushmaster ACR, focusing on group sizes with different ammunition types and evaluating zero retention after barrel removal. The instruction comes from an expert with high authority, demonstrating field stripping and technical explanations.

Quick Summary

Expert accuracy testing of the FN SCAR 16S and Bushmaster ACR at 100 yards revealed the SCAR 16S (1:7 twist) achieved 1 MOA with 69gr match ammo, while the ACR (1:9 twist) shot 1.5 MOA. The SCAR also demonstrated superior zero retention after barrel removal.

Chapters

  1. 00:11Introduction to Accuracy Testing
  2. 00:59Bushmaster ACR M193 Test
  3. 01:58Bushmaster ACR 69gr Match Test
  4. 03:23ACR Barrel Removal and Zero Retention
  5. 05:47FN SCAR 16S M193 Test
  6. 07:17FN SCAR 16S 69gr Match Test
  7. 08:31SCAR Barrel Removal and Zero Retention
  8. 11:52Conclusion and Summary

Frequently Asked Questions

How did the FN SCAR 16S and Bushmaster ACR perform in accuracy tests at 100 yards?

The FN SCAR 16S and Bushmaster ACR both shot around 2 MOA with 55-grain M193 ball ammunition. With 69-grain match ammunition, the SCAR 16S achieved approximately 1 MOA, while the ACR shot about 1.5 MOA.

What was the zero retention like for the SCAR 16S and ACR after barrel removal?

The FN SCAR 16S demonstrated excellent zero retention, showing almost no point of impact shift after its barrel was removed and reinstalled. The Bushmaster ACR experienced a shift of approximately 1.5 inches.

What is the significance of barrel twist rate in rifle accuracy?

Barrel twist rate affects a rifle's ability to stabilize bullets. A faster twist (e.g., 1:7) is generally better for heavier bullets, while a slower twist (e.g., 1:9) is often optimal for lighter bullets, as seen in the SCAR vs. ACR comparison.

Which rifle is better for accuracy with match-grade ammunition?

Based on this test, the FN SCAR 16S, with its 1:7 twist barrel, showed superior performance with 69-grain match ammunition, achieving tighter groups than the Bushmaster ACR with its 1:9 twist barrel.

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