Sporter Rifle Accuracy ~ Part II The Ammo

Published on September 2, 2016
Duration: 72:11

This video provides an in-depth guide to developing accurate rifle ammunition, emphasizing the critical relationship between rifle and ammo. It details the importance of meticulous record-keeping, the scientific method for load development, and careful selection of bullets, powders, and cases. The instructor stresses that accuracy is paramount over velocity and that tailoring loads to a specific rifle is key to achieving sub-MOA performance.

Quick Summary

Developing accurate rifle ammunition requires a systematic approach. Start by keeping detailed records and applying the scientific method, changing only one variable at a time. Begin loads 10% below maximum, incrementing powder charges proportionally to case capacity. Prioritize temperature-stable extruded powders and consider case neck concentricity for optimal precision.

Chapters

  1. 00:00Introduction: Ammo & Rifle Synergy
  2. 00:32The Importance of a Logbook
  3. 02:27Applying the Scientific Method
  4. 03:49Rifle Barrel Harmonics Explained
  5. 06:37Working Up a Load: Incremental Steps
  6. 10:35Ladder Testing Explained
  7. 11:01Published Data vs. Your Rifle
  8. 11:39Accuracy Over Velocity
  9. 12:52Component Variations: Powders & Bullets
  10. 13:33Bullet Cost vs. Accuracy
  11. 15:51Match vs. Varmint Bullets
  12. 18:35Boat-Tail vs. Flat-Base Bullets
  13. 24:45Bullet Form and Shape
  14. 26:37Bullet Length & Rifling Twist
  15. 31:48Selecting the Best Powders
  16. 38:52Powder Substitution Caution
  17. 41:01Ball Powders Explained
  18. 45:37Extruded Powders for Accuracy
  19. 49:24Ball Powder Group Consistency
  20. 51:14Weighing Powder Charges
  21. 53:33The Importance of the Case
  22. 55:58Case Wall Thickness & Pressure
  23. 59:38Case Neck Concentricity
  24. 61:45Fixing Case Concentricity: Neck Turning
  25. 64:20Neck Turning Tool Demonstration
  26. 66:43Benchrest Chamber Dimensions
  27. 69:12Key Takeaways & Final Advice

Frequently Asked Questions

What is the most important factor for achieving rifle accuracy?

The most critical factor for rifle accuracy is the synergy between the rifle and its ammunition. No rifle can be more accurate than the ammunition it fires, and vice versa. Developing ammunition tailored to your specific firearm is key to unlocking its full accuracy potential.

How should I start developing a new rifle load?

Begin by consulting published load data and starting 10% below the maximum charge. Use the scientific method by changing only one variable at a time, incrementing powder charges proportionally to case capacity, and testing with at least four to five shots per group.

Are expensive bullets always more accurate?

Not necessarily. Expensive bullets are often designed for deep penetration and heavy game. For pure accuracy, factors like construction, consistency, and how well the bullet's form matches your rifle's twist rate are more important than cost.

What's the difference between ball and extruded powders for reloading?

Ball powders meter very uniformly, ideal for progressive presses, but can be temperature-sensitive. Extruded powders are generally more temperature-stable and preferred for maximum accuracy, though they may require more careful handling during metering.

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