Shooting the World's First 7mm PRC Rifle

Published on August 8, 2022
Duration: 20:47

This guide details the assembly and initial range testing of a custom 7mm PRC rifle, featuring a Defiance Anti action, MDT Oryx chassis, and Leupold Mark 5HD optic. It covers load development with various powders and bullets, velocity testing using a LabRadar, and ballistic comparisons against established cartridges like the 7mm Rem Mag. The expert-level instruction emphasizes careful pressure monitoring and efficient cartridge performance.

Quick Summary

The 7mm PRC rifle build features a Defiance Anti action, MDT Oryx chassis, and Leupold Mark 5HD scope. It demonstrates a velocity advantage over the 7mm Rem Mag (2,806 fps vs 2,705 fps) and is optimized for high BC bullets with its 1:8 twist rate, offering excellent long-range ballistics and efficiency.

Chapters

  1. 00:00Introduction to the 7mm PRC
  2. 00:35First Shots at the Range
  3. 01:48Velocity Testing and Load Data
  4. 04:52Sponsor Segment: Akek Alpha 3200
  5. 06:26Case Capacity and Efficiency
  6. 07:037mm Rem Mag vs. 7mm PRC Comparison
  7. 11:07Custom Rifle Build Specs
  8. 13:33Final Verdict and Ballistic Comparison

Frequently Asked Questions

What are the key components of the custom 7mm PRC rifle build?

The custom 7mm PRC rifle features a Defiance Anti action, a 24-inch Preferred Barrel Blanks barrel with a 1:8 twist rate, an MDT Oryx chassis, a TriggerTech Special trigger, and a Leupold Mark 5HD 3.5-18x44 scope.

How does the 7mm PRC compare in velocity to the 7mm Rem Mag?

In a direct comparison test using identical charges, primers, and bullets, the 7mm PRC averaged 2,806 fps, while the 7mm Rem Mag averaged 2,705 fps, indicating a significant velocity advantage for the PRC.

What are the recommended safe operating velocities for the 7mm PRC?

During testing, over-pressure was observed at 3,113 fps with a 175gr ELD-X bullet. A comfortable factory load velocity is estimated to be around 3,000 fps, with 195gr Berger EOL bullets showing pressure at 2,911 fps.

What makes the 7mm PRC an efficient cartridge?

The 7mm PRC is considered efficient due to its design, which offers less case capacity than cartridges like the 7mm Rem Mag or 28 Nosler, allowing it to achieve magnum-level performance with moderate powder charges.

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