Rechambering .222 Remington To .224 Valkyrie

Rechambering a Model 700 Remington action from .222 Remington to .224 Valkyrie entails going to a shorter and larger diameter cartridge. We’ll accomplish this by enlarging the chamber and utilizing the existing barrel threads while not giving up much barrel length in the process.

by Norman E. Johnson

The .222 Remington barrel used in this project came into the picture as a take-off barrel with a well-established history of accuracy. With its 1:14 standard twist, this barrel would be used primarily with lighter bullets up to 60 grains maximum when chambered for the .224 Valkyrie cartridge. Another premium barrel was on order with a 1:7 twist which would undergo comparative testing from the benchrest and in longer range shooting. These cartridges would later be pitted against two barrels chambered for the .22 PPC with similar barrel twists. The .22 PPC has established an excellent reputation for extreme accuracy whereas the .224 Valkyrie is designed to be a smaller caliber, long-range round primarily with heavier bullets in a faster twist barrel.

Accurate measurement of both the .222 Remington and the .224 Valkyrie cartridges indicated that…

Read more in the June 2019 issue.

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