6.5 Grendel - 120gr Speer Gold Dot - 2020 Deer Load pt. 2

Published on November 17, 2020
Duration: 33:15

This video details the load development process for a 6.5 Grendel deer hunting round, focusing on the 120gr Speer Gold Dot bullet. The instructor tests AR Comp and Vihtavuori N540 powders, meticulously recording velocities, pressure signs, and group sizes at 100 yards. The final selected load of 27.6 grains of AR Comp demonstrates excellent accuracy and velocity, making it suitable for hunting.

Quick Summary

The optimal load for a 6.5 Grendel deer hunting round using 120gr Speer Gold Dot bullets is 27.6 grains of AR Comp powder. This charge yielded the best accuracy at 100 yards (0.32 inches), with a velocity of 2458 fps and a standard deviation of 5.5 fps, making it a reliable choice for hunting.

Chapters

  1. 00:00Introduction: 6.5 Grendel Deer Load Part 2
  2. 00:08Recap: Brass Prep and Bullet Choice
  3. 00:28Powder Options: AR Comp and Vihtavuori N540
  4. 01:16Extruded vs. Flattened Powders
  5. 02:04Testing Plan: Charge Weights and Increments
  6. 03:14Vihtavuori N540 Load Data Reference
  7. 04:12Load Specifications: OAL, Primers
  8. 04:50Setting Up Chronograph and Loading Test Rounds
  9. 05:30Bullet Seating and OAL Check
  10. 07:13First Shots: AR Comp Velocity and Pressure
  11. 08:42Testing Vihtavuori N540: Initial Results
  12. 09:39Velocity Data Analysis
  13. 10:21Refined Load Development Plan
  14. 10:49Accuracy Testing: 100 Yards Setup
  15. 11:53AR Comp Accuracy Groups
  16. 14:14Magazine Issues and Function Problems
  17. 16:06Magazine Swap and Continued AR Comp Testing
  18. 18:52Switching to Vihtavuori N540 Accuracy Testing
  19. 22:38Final Load Comparison and Decision
  20. 23:36Brass Inspection After Firing
  21. 25:33Brass Cleaning and Annealing
  22. 26:34Selecting the Final Hunting Load
  23. 28:02Mounting New Hunting Scope
  24. 28:26Sighting In the Vortex Viper HS Scope
  25. 30:47Scope Adjustment and Function Check
  26. 32:12Ballistic Gel Test: Bullet Expansion
  27. 32:46Conclusion: Ready for the Woods

Frequently Asked Questions

What are the best powders for a 6.5 Grendel deer hunting load with 120gr Speer Gold Dot bullets?

For 6.5 Grendel with 120gr Speer Gold Dot bullets, AR Comp proved to be the superior powder for accuracy, delivering excellent groups and acceptable velocities. Vihtavuori N540 was also tested but did not match the accuracy performance of AR Comp for this specific bullet weight and application.

What is the optimal charge weight for AR Comp powder in a 6.5 Grendel deer hunting load?

The optimal charge weight for AR Comp powder with 120gr Speer Gold Dot bullets in a 6.5 Grendel for deer hunting was determined to be 27.6 grains. This charge produced the best accuracy group at 0.32 inches at 100 yards, with a velocity of 2458 fps and a low standard deviation of 5.5 fps.

What are the key specifications for the 6.5 Grendel rifle used in this load development?

The rifle features an 18-inch Faxon heavy barrel with a 1:8 twist rate and is equipped with a Silencerco Omega suppressor. For hunting, a Vortex Viper HS 2.5-10x44 scope was mounted and zeroed.

What pressure signs should be observed when reloading 6.5 Grendel ammunition?

When reloading 6.5 Grendel, watch for ejector marks on the case head, which indicate increasing pressure. More severe signs include ejector smears, case head expansion, and eventually, brass tearing. The instructor noted that pushing AR Comp charges up to 27.7 grains resulted in more pronounced ejector marks.

What is the recommended overall length for 6.5 Grendel hunting ammunition?

The optimal overall length for the tested 6.5 Grendel hunting loads was 2.280 inches. This measurement, along with a cartridge base ogive of 1.731 inches, was used to ensure consistent feeding and chambering in the firearm.

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