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Smyth Busters: Can You Interchange Rifle & Pistol Primers?

Smyth Busters: Can You Interchange Rifle & Pistol Primers?

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Published on February 16, 2021
Duration: 3:23

This video from Brownells Gun Techs Caleb Savant and Steve Ostrem explores the interchangeability of rifle and pistol primers in reloading. They explain the fundamental differences in primer cup thickness and sensitivity between large pistol, small pistol, large rifle, and small rifle primers. The video highlights that while some handgun cartridges can use small rifle primers (like .454 Casull and .38 Super) due to their higher pressure requirements and the rifle primer's thicker cup, it's crucial to reduce and carefully work up loads to avoid exceeding pressure limits. Conversely, pistol primers are not robust enough for rifle cartridges. The experts strongly advise adhering to reloading manual specifications or conducting thorough research with credible sources before attempting any primer substitutions, emphasizing the risks of potential malfunctions and safety issues.

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