300 BLK Pistol/SBR Supersonic Hunting Load with 110gr Barnes TAC-TX - followup

Published on January 6, 2017
Duration: 12:45

This video details a follow-up load development for 300 Blackout supersonic hunting rounds using 110gr Barnes TAC-TX bullets in an 8.5-inch SBR. The instructor incrementally increased the Winchester 296 powder charge from 20.2 grains up to 21.0 grains, observing group sizes and chronograph data. The goal was to achieve higher velocities and tighter groups than previously obtained, while monitoring for pressure signs. The experiment concluded that the optimal load for this platform likely lies between 20.2 and 20.4 grains of W296, yielding approximately 2200-2250 fps with acceptable accuracy for hunting within 100 yards.

Quick Summary

For 300 Blackout supersonic hunting loads with 110gr Barnes TAC-TX bullets in an 8.5-inch SBR, the optimal charge of Winchester 296 is between 20.2 and 20.4 grains. This yields velocities around 2200-2250 fps with acceptable accuracy for hunting within 100 yards, while higher charges may not improve performance and can degrade accuracy.

Chapters

  1. 00:01Introduction & Previous Results
  2. 00:15110gr Barnes TAC-TX Bullet Overview
  3. 00:43Previous Load: 20.2 Grains W296
  4. 01:15Plan for Hotter Loads
  5. 01:43Velocity Goals & Chart Analysis
  6. 02:26Bullet Supply & Testing Constraints
  7. 02:54New Load Increments: 20.4 to 21.0 Grains
  8. 03:17Reloading Process Overview
  9. 04:00Hunting Bullet Availability Issues
  10. 05:14Range Testing Begins: 100 Yards
  11. 05:25Load 1: 20.4 Grains W296
  12. 06:10Results for 20.4 Grains
  13. 06:25Load 2: 20.6 Grains W296
  14. 07:06Results for 20.6 Grains
  15. 07:19Load 3: 20.8 Grains W296
  16. 07:58Results for 20.8 Grains
  17. 08:32Load 4: 21.0 Grains W296
  18. 08:57Results for 21.0 Grains & Conclusion
  19. 09:18Post-Range Analysis & Group Review
  20. 09:42Compression & Accuracy Issues
  21. 10:13Maximum Velocity & Barrel Length Considerations
  22. 10:35Updated Load Chart & Trend Line
  23. 11:24Case Capacity Limitations
  24. 11:30Acceptable Pressure Signs
  25. 11:51Performance vs. Expectations
  26. 12:25Final Thoughts & Summary

Frequently Asked Questions

What is the optimal load for 300 Blackout supersonic hunting rounds with 110gr Barnes TAC-TX bullets in an 8.5-inch SBR?

Based on testing, the optimal load appears to be between 20.2 and 20.4 grains of Winchester 296 powder. This range provided the best balance of group tightness and velocity, achieving approximately 2200-2250 fps with acceptable accuracy for hunting.

What velocities can be expected from a 300 Blackout SBR using 110gr Barnes TAC-TX bullets?

With an 8.5-inch barrel and Winchester 296 powder, velocities in the range of 2200 to 2250 feet per second were observed with optimal loads. Higher powder charges did not significantly increase velocity and sometimes degraded accuracy.

Are there any pressure concerns when reloading 300 Blackout with higher charges of Winchester 296?

While some flattening of primers was noted at higher charges (up to 21.0 grains), no severe pressure signs like ejector marks were observed. However, accuracy degraded at the highest tested charges, suggesting compression issues or reaching the powder's optimal burn rate for the barrel length.

How does the 110gr Barnes TAC-TX perform in a 300 Blackout SBR for hunting?

For hunting within 100 yards, especially closer ranges, groups around 1.5 to 1.75 inches at 100 yards are considered acceptable. The 110gr Barnes TAC-TX in a 300 Blackout SBR offers respectable performance for this application, though not spectacular.

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