A Smarter Block: RCBS Matchmaster (Dual Fit + Flow-Through)

Published on May 27, 2026
Duration: 6:34

This video provides a detailed look at the RCBS Matchmaster multi-cartridge loading block. It highlights the dual-fit design, which accommodates both .223 and .308 case rim diameters, and the flow-through holes that prevent powder collection. The review covers material construction, precision machining, and practical use for organizing cartridges and dispensing powder during the reloading process.

Quick Summary

The RCBS Matchmaster loading block is a precision-machined accessory made from 6061 aluminum. Its key features include a dual-fit design accommodating both .223 and .308 case rim diameters, and flow-through holes to prevent powder accumulation, ensuring cartridges sit stable and upright.

Chapters

  1. 00:00Introduction to RCBS Matchmaster Loading Block
  2. 00:16Gavin Geary from Ultimate Reloader
  3. 00:36Material and Construction: Aluminum, Coating, Machining
  4. 00:46Features: No-Slip Feet and Flow-Through Holes
  5. 00:58Dual-Fit Design Explained
  6. 01:11Common Cartridge Compatibility (.223 and .308 Rims)
  7. 01:22Practical Demonstration: Fitting Cartridges
  8. 01:57Powder Dispensing with Direct Throws
  9. 02:26Using a Funnel with a Powder Dispenser
  10. 02:51Tip for Removing Funnel
  11. 03:01Effectiveness of Flow-Through Holes
  12. 03:11Stacking Design Benefits
  13. 03:18Testing with Completed Cartridges
  14. 03:34Conclusion and Viewer Engagement
  15. 03:50Ultimate Reloader Channel Information

Frequently Asked Questions

What are the key features of the RCBS Matchmaster loading block?

The RCBS Matchmaster loading block features a dual-fit design for .223 and .308 case rims, flow-through holes to prevent powder buildup, and is precision machined from 6061 aluminum. It also includes no-slip feet for stability and a stacking design for efficient storage.

What cartridges are compatible with the RCBS Matchmaster loading block?

The dual-fit design accommodates .223 case rim cartridges like .223 Remington and .300 Blackout, as well as .308 case rim cartridges such as .308 Winchester, .30-06 Springfield, Creedmoor variants, 6 Dasher, and 6 GT.

How do the flow-through holes in the loading block work?

The flow-through holes allow any spilled powder to pass through the block instead of accumulating at the bottom. This prevents powder from interfering with the seating of cartridges and reduces the chance of them tipping over.

What is the benefit of the dual-fit design on this loading block?

The dual-fit design means each hole can accept cartridges with either a .223 or a .308 case rim diameter. This versatility effectively gives you two reloading blocks in one, making it suitable for a wider variety of common rifle cartridges.

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