Peterson Long 300 Win Mag Brass

Published on December 25, 2020
Duration: 4:10

This video reviews Peterson's new 300 Winchester Magnum 'Long' brass, highlighting its potential to improve case life due to a longer base-to-shoulder measurement. The presenter compares it to standard Hornady and Jag brass, noting the Peterson Long brass is closer to the fired dimensions of his rifles' chambers. This suggests less stretching and fewer reloads before potential case head separation, though it comes at a higher price point.

Quick Summary

Peterson's 'Long' brass for 300 Winchester Magnum features a longer base-to-shoulder measurement (approx. 2.276 inches) compared to standard brands like Hornady and Jag. This design aims to reduce brass stretching by minimizing the gap between the brass shoulder and the chamber shoulder, a common issue with belted magnums, thereby extending case life and potentially reducing failures like case head separation.

Chapters

  1. 00:00Introduction to Peterson 300 Win Mag Brass
  2. 00:36Peterson Long Brass vs. Standard Brass
  3. 00:57Measuring Peterson Long Brass
  4. 01:08Comparing Hornady Brass Dimensions
  5. 01:16Comparing Jag Brass Dimensions
  6. 01:24300 Win Mag Rifles and Fired Brass
  7. 01:41Savage 110 Fired Brass Measurement
  8. 01:51Peterson Long Brass Fit for Rifles
  9. 02:14300 Win Mag Headspace Issues Explained
  10. 02:28Case Stretching and Separation
  11. 02:42Peterson Long Brass Advantage
  12. 02:58Availability for Other Calibers
  13. 03:15Loading and Expectations
  14. 03:21Cost of Peterson Long Brass
  15. 03:41Peterson Brass Packaging
  16. 03:57Conclusion and Future Use

Frequently Asked Questions

What is the primary benefit of Peterson's 'Long' brass for 300 Winchester Magnum?

The primary benefit of Peterson's 'Long' brass for 300 Win Mag is its longer base-to-shoulder measurement. This dimension is closer to typical fired chamber dimensions, which reduces excessive brass stretching during firing and resizing, potentially leading to significantly increased case life and fewer case head separations.

How does Peterson's 'Long' 300 Win Mag brass compare in size to other brands?

Peterson's 'Long' 300 Win Mag brass measures approximately 2.276 inches from base to shoulder. This is longer than new Hornady brass (around 2.265 inches) and Jag brass (around 2.260 inches), making it a closer match to fired brass dimensions in many 300 Win Mag chambers.

Why is the base-to-shoulder measurement important for 300 Winchester Magnum brass?

For 300 Winchester Magnum, which headspaces on its belt, the space between the brass shoulder and the chamber shoulder is critical. A larger gap means more stretching when fired. Peterson's 'Long' brass aims to minimize this gap, reducing stress on the brass and prolonging its usable life.

Is Peterson's 'Long' brass significantly more expensive than standard brass?

Yes, Peterson's 'Long' 300 Win Mag brass carries a premium. A box of 50 pieces costs $66.99, compared to $61.99 for their standard brass. This represents an additional $5 for 50 pieces, or about $0.10 per case, for the benefit of the longer dimensions.

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