77gr Berger OTM Tactical with AR-Comp and Accurate 2520

Published on December 25, 2017
Duration: 24:00

This video details the process of handloading 77gr Berger OTM Tactical bullets for the 223 Remington cartridge, utilizing Alliant AR-Comp and Accurate 2520 powders. The instructor emphasizes precise brass preparation, consistent bullet seating to 2.260 inches OAL, and careful powder measurement. Live-fire testing at 100 yards is conducted to evaluate accuracy and velocity, with a focus on identifying pressure signs and understanding the impact of different components like brass and primers on performance.

Quick Summary

Reloading 77gr Berger OTM Tactical bullets for 223 Remington is detailed using Alliant AR-Comp and Accurate 2520 powders. Key recommendations include using Starline brass, CCI No. 41 primers, and seating bullets to 2.260 inches OAL. Load data and accuracy testing at 100 yards are provided, with emphasis on monitoring pressure signs, especially with AR-Comp.

Chapters

  1. 00:00Introduction: 77gr Berger OTM Tactical
  2. 00:36Powder Selection: AR-Comp & Accurate 2520
  3. 00:45Primer & Brass Selection
  4. 01:32Load Data: Alliant AR-Comp
  5. 03:15Load Data: Accurate 2520
  6. 04:06Priming Process
  7. 05:24Bullet Seating & OAL
  8. 07:34Range Setup & Rifle Specs
  9. 08:07Shooting AR-Comp Loads (20.9gr)
  10. 09:01AR-Comp Function Issues & Analysis
  11. 12:29Pressure Sign Analysis (AR-Comp vs. Accurate 2520)
  12. 13:21AR-Comp Group Analysis & Velocity
  13. 15:36Shooting Accurate 2520 Loads
  14. 17:46Accurate 2520 Group Analysis
  15. 20:02Accurate 2520 Velocity Analysis
  16. 22:17Maximum Overall Length Test
  17. 23:21Future Testing & Conclusion

Frequently Asked Questions

What powders are recommended for reloading 77gr Berger OTM Tactical bullets in 223 Remington?

The video recommends Alliant AR-Comp and Accurate 2520 powders for reloading 77gr Berger OTM Tactical bullets. Load data is provided for both, with specific charge ranges and increments for safe workup.

What is the recommended overall length (OAL) for 77gr Berger OTM Tactical bullets when reloading?

The recommended overall length for 77gr Berger OTM Tactical bullets in this reloading guide is 2.260 inches. This length was used consistently for all tested loads and verified with a bullet comparator.

What are the key differences between Starline and Lake City brass for reloading?

Starline 223 brass has less case capacity than Lake City brass. This means that for the same powder charge, Starline brass will result in higher pressures, requiring adjustments to load data.

What pressure signs were observed when reloading with Alliant AR-Comp?

With Alliant AR-Comp, pressure signs like ejector marks and smearing primers were observed at the highest charge weights. This indicates that load development should be approached cautiously and pressure signs monitored closely.

How did the 77gr Berger OTM Tactical bullets perform in terms of accuracy?

The 77gr Berger OTM Tactical bullets demonstrated excellent accuracy, with multiple groups under 0.6 inches and four groups under 0.5 inches at 100 yards. This performance exceeded expectations compared to similar bullets.

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