.223 Rem - 75gr Hornady BTHP with 19 powders

Published on September 20, 2021
Duration: 28:53

This video details a comprehensive reloading experiment testing 19 different powders with the 75gr Hornady BTHP bullet in .223 Remington. The instructor aims to find a cost-effective path to replicating Mark 262 clone performance, analyzing group sizes and velocities for each powder charge. Several powders, including Hodgdon H322, Vitavouri N135, and AR Comp, showed promising accuracy, with AR Comp emerging as a potential top contender for further development.

Quick Summary

For the .223 Remington 75gr Hornady BTHP bullet, faster burning powders like Hodgdon H322, Vitavouri N135, and AR Comp demonstrated superior accuracy. AR Comp, in particular, yielded a 0.59-inch group at 2732 fps, making it a promising choice for load development and potentially creating a Mark 262 clone.

Chapters

  1. 00:00Introduction: 75gr Hornady BTHP Reloading Project
  2. 01:12Reloading Equipment Issues: Seating Die Problems
  3. 02:03Firearm Setup: M-LOK Adapter and Gas Block
  4. 02:23Firearm Tuning: Overgassing and Adjustable Gas Blocks
  5. 03:13Environmental Factors: Elevation and Load Data
  6. 03:53Shooting Begins: 95 Rounds, 19 Loads
  7. 04:44Load Data Verification and Safety Considerations
  8. 04:56Powder Test 1: Shooters World Match Rifle
  9. 07:15Powder Test 2: Accurate 2520
  10. 08:04Powder Test 3: Power Pro 2000 MR
  11. 09:11Powder Test 4: Power Pro 4000 MR (Magnum Powder)
  12. 11:53Powder Test 5: H4895 (with Seating Die Change)
  13. 13:17Powder Test 6: IMR 4895
  14. 14:05Powder Test 7: IMR 4064
  15. 15:34Powder Test 8: Accurate 2460
  16. 16:17Powder Test 9: Reloader 15
  17. 16:50Powder Test 10: Vitavouri N140
  18. 18:02Powder Test 11: Hodgdon H322 (Fast Burner)
  19. 19:42Powder Test 12: Vitavouri N135
  20. 20:14Powder Test 13: Hodgdon Benchmark
  21. 21:08Powder Test 14: 8208 XBR
  22. 21:46Powder Test 15: AR Comp
  23. 22:39Powder Test 16: Ramshot TAC (Ball Powder)
  24. 23:18Powder Test 17: Winchester 748 (Ball Powder)
  25. 23:51Powder Test 18: CFE223
  26. 25:19Powder Test 19: Accurate BL-C2 (Least Favorite)
  27. 26:32Reviewing Results: Promising Powders Identified
  28. 27:40Top Performing Powders: AR Comp Highlighted
  29. 28:07Future Load Development Strategy
  30. 28:43Conclusion and Next Steps

Frequently Asked Questions

What powders are recommended for the 75gr Hornady BTHP bullet in .223 Remington?

Based on testing, faster burning powders like Hodgdon H322, Vitavouri N135, and AR Comp showed excellent accuracy potential. AR Comp, in particular, yielded a tight 0.59-inch group at 2732 fps, making it a strong candidate for further load development.

What were the results of testing traditional .223 Remington powders with the 75gr Hornady BTHP?

Traditional favorites like H4895 and IMR 4064 showed poor consistency with high standard deviations and extreme spreads, indicating they may not be the best choices for this specific bullet weight and application.

Are there any safety concerns when reloading with magnum rifle powders like Power Pro 4000 MR?

Yes, using magnum rifle powders in smaller cartridges like .223 Remington requires extreme caution. While it can be done, as demonstrated with Power Pro 4000 MR yielding a 0.83-inch group, it's crucial to proceed with caution and be aware of potential pressure issues.

How does seating die choice affect reloading accuracy with the 75gr Hornady BTHP?

The seating die significantly impacts bullet consistency. The Forster Ultra Micrometer seating die proved most effective in minimizing bullet damage and improving group sizes compared to other dies tested, highlighting the importance of proper reloading tools.

What is the best powder for creating a Mark 262 clone with 75gr bullets?

While the video tests many powders, AR Comp emerged as a top performer for the 75gr Hornady BTHP, producing a 0.59-inch group at 2732 fps. Further development with AR Comp is suggested to optimize accuracy for a Mark 262 clone.

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