6.5 Creedmoor - 140gr Hornady Match BTHP with IMR4451 & RL22

Published on March 19, 2018
Duration: 25:13

This video details the process of reloading 6.5 Creedmoor ammunition using 140-grain Hornady Match BTHP bullets with two different powders: IMR 4451 and Reloder 22. The instructor, with apparent expertise in reloading and ballistics, systematically tests various charge weights, providing velocity and group size data. Key takeaways include the impact of brass annealing on standard deviation and the performance characteristics of each powder with the tested bullet, highlighting accuracy and velocity trade-offs.

Quick Summary

For reloading 6.5 Creedmoor with 140-grain Hornady Match BTHP bullets, IMR 4451 powder proved to be a strong contender, offering excellent accuracy and good standard deviations in the 41.6-41.9 grain range. Brass annealing also significantly improved consistency, reducing standard deviations. Reloder 22 yielded higher velocities but compromised accuracy, especially with compressed charges.

Chapters

  1. 00:00Introduction: 6.5 Creedmoor Reloading Project
  2. 00:28Powder Selection: Reloder 22 Exploration
  3. 01:40Powder Selection: IMR 4451 Exploration
  4. 02:13Component Selection: Primers, Brass, and Preparation
  5. 03:10Load Data: IMR 4451 Charge Weights and Justification
  6. 05:01Load Data: Reloder 22 Charge Weights and Uncertainty
  7. 06:28Overall Length and Case Fill Considerations
  8. 08:05Seating Depth and Compressed Loads Observation
  9. 11:23Range Testing: IMR 4451 - 41.3 Grains
  10. 12:32Range Testing: IMR 4451 - 41.6 Grains
  11. 13:19Range Testing: IMR 4451 - 41.9 Grains
  12. 14:10Range Testing: IMR 4451 - 42.2 Grains
  13. 14:42Range Testing: IMR 4451 - 42.5 Grains (Max)
  14. 15:48Range Testing: Reloder 22 - 45.0 Grains (Start)
  15. 16:45Range Testing: Reloder 22 - 45.5 Grains
  16. 17:15Range Testing: Reloder 22 - 46.0 Grains
  17. 17:52Range Testing: Reloder 22 - 46.5 Grains
  18. 18:20Range Testing: Reloder 22 - 47.0 Grains (Max)
  19. 19:08Post-Range Analysis: Primer Inspection and Pressure Signs
  20. 20:25Data Review: IMR 4451 Group Sizes and Velocities
  21. 22:04Data Review: Reloder 22 Group Sizes and Velocities
  22. 23:06Impact of Brass Annealing on Standard Deviation
  23. 24:21Future Projects: AR10 Build and Barrel Break-in

Frequently Asked Questions

What are the best powders for reloading 6.5 Creedmoor with 140-grain Hornady Match BTHP bullets?

For the 6.5 Creedmoor with 140-grain Hornady Match BTHP bullets, IMR 4451 showed excellent accuracy and good standard deviation, particularly between 41.6 and 41.9 grains. Reloder 22 provided higher velocities but tended to reduce accuracy, especially with compressed loads.

How does brass annealing affect 6.5 Creedmoor reloading accuracy?

Annealing brass for 6.5 Creedmoor reloads significantly improves consistency, leading to lower standard deviation numbers. In recent tests, nine out of twenty groups had single-digit standard deviations after annealing, a marked improvement over previous results.

What are the optimal seating depths for 140-grain 6.5 Creedmoor bullets?

For the 140-grain Hornady Match BTHP in a Thompson Center Compass, an overall length of 2.8 inches was used, resulting in a jump to the lands of approximately 0.125 inches. This jump still yielded good groups, indicating that precise land-hugging isn't always necessary for accuracy.

What are the pressure signs to watch for when reloading 6.5 Creedmoor?

When reloading 6.5 Creedmoor, watch for primer cratering, ejector marks on the case heads, and difficult bolt lift. While primer cratering was observed with CCI No. 41 primers in the Thompson Center Compass, it was within acceptable limits and did not indicate excessive pressure.

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