7.5x55 Swiss - Reloading Journal 3

Published on June 8, 2015
Duration: 20:02

This video details the process of reloading 7.5x55 Swiss ammunition for a K-31 rifle. The instructor demonstrates loading rounds with IMR 4895 powder, varying charges from 41 to 44 grains, and seating bullets to a specific overall length while backing off the lands. Range testing is conducted to evaluate accuracy and point of impact with each load, with observations on spent brass for pressure signs. The content is suitable for intermediate reloaders seeking to refine their techniques for this classic rifle cartridge.

Quick Summary

Reloading 7.5x55 Swiss ammunition for a K-31 rifle involves preparing brass, charging with powder like IMR 4895, and seating bullets to a specific length, such as 2.920 inches, often with the bullet slightly off the lands. Testing various powder charges and inspecting spent brass for pressure signs are crucial for safe and accurate reloads.

Chapters

  1. 00:01Introduction and Reloading Goal
  2. 00:30Brass Preparation and Load Planning
  3. 01:09Bullet Seating Depth and Lands
  4. 01:56Die Setup and Case Lubrication
  5. 03:17Resizing and Priming Brass
  6. 04:20Powder Selection and Charging
  7. 05:04Weighing Powder Charges
  8. 06:37Seating Bullets - 41 Grain Load
  9. 07:39Achieving Target OAL
  10. 09:30Completing Bullet Seating
  11. 10:18Range Setup and Target Placement
  12. 11:09Target Details and Load Progression
  13. 11:54Shooting the 41 Grain Load and Sight Picture Issues
  14. 12:46Shooting the 42 Grain Load with Adjusted Sights
  15. 13:47Shooting the 43 Grain Load with Sight Picture Changes
  16. 14:56Shooting the 44 Grain Load
  17. 15:35Reloading Reflections and Questions
  18. 16:04Measuring Group Sizes
  19. 19:01Brass Inspection and Pressure Signs
  20. 19:48Conclusion and Future Reloading Plans

Frequently Asked Questions

What powder is recommended for reloading 7.5x55 Swiss ammunition for a K-31 rifle?

IMR 4895 powder is used in this video for reloading 7.5x55 Swiss cartridges. The instructor tested charges ranging from 41 to 44 grains, observing accuracy and pressure signs.

What is a good overall length for reloaded 7.5x55 Swiss cartridges?

For 7.5x55 Swiss reloads, an overall length of 2.920 inches is suggested, aiming for the bullet to be approximately 0.020 inches off the lands of the rifle's chamber for potential accuracy improvements.

How can I check for over-pressure signs when reloading 7.5x55 Swiss?

Inspect the spent brass for flattened primers. In this video, slight primer flattening was observed at 44 grains of IMR 4895, but it was not considered concerning. Any significant flattening or ejector marks indicates excessive pressure.

What are the key steps in reloading 7.5x55 Swiss ammunition?

Key steps include preparing brass (resizing, priming), charging with powder (e.g., IMR 4895), seating bullets to a specific overall length (e.g., 2.920 inches), and then testing for accuracy and pressure signs at the range.

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