Neck turning and neck sizing ~ Seeking a higher level of accuracy!

Published on January 24, 2017
Duration: 43:03

This guide details advanced cartridge case preparation techniques for handloaders seeking higher accuracy. It covers essential steps like inspection, trimming, deburring, and weight sorting, progressing to specialized processes like neck turning and neck sizing. The instruction emphasizes the importance of uniform case capacity and concentricity for precision shooting, drawing on the expertise of GunBlue490.

Quick Summary

Neck turning ensures bullet concentricity by uniforming case neck wall thickness, centering the bullet with the bore axis for improved accuracy. Neck sizing preserves fire-formed case dimensions for target shooting, while full-length sizing is required for reliable feeding in hunting firearms.

Chapters

  1. 00:00Introduction to Advanced Case Prep
  2. 00:58Understanding MOA and Factory Standards
  3. 03:35Segregating Brass by Weight
  4. 07:19Quality Brass Selection
  5. 09:05Factory vs. Benchrest Chambers
  6. 11:10Neck Turning for Concentricity
  7. 15:55Neck Turning Tools and Techniques
  8. 23:30Neck Sizing vs. Full-Length Sizing
  9. 28:55Case Life and Annealing

Frequently Asked Questions

What is neck turning and why is it important for accuracy?

Neck turning is a process that removes excess material from the outside of a cartridge case neck to ensure uniform wall thickness. This is crucial for accuracy as it centers the bullet perfectly with the bore axis upon chambering, preventing angled entry and improving shot consistency.

What is the difference between neck sizing and full-length sizing?

Neck sizing resizes only the case neck, preserving the fire-formed body dimensions to your rifle's chamber for improved accuracy and case life, ideal for target shooting. Full-length sizing resizes the entire case, ensuring reliable feeding in hunting or semi-automatic firearms.

How does brass weight variation affect accuracy?

Variations in brass weight lead to inconsistent internal case capacity, which acts as the combustion chamber. Uniform case capacity is essential for consistent powder burn and pressure, directly impacting shot-to-shot accuracy and velocity.

What tools are needed for advanced case preparation like neck turning?

Essential tools include a case trimmer, deburring tool, case neck brush, case scale for weight sorting, and specialized tools like a bench-mounted Forster Neck Turner or a Lee Collet Die for neck sizing.

More Gunsmithing & DIY Videos You Might Like

More from GunBlue490

View all →