This video details a heat stress testing procedure for AR-15 barrels, specifically for the WWSD2020 project. Lead Firearms Instructor and SEO Strategist Ian McCullum demonstrates how to assess barrel performance under rapid fire conditions. The test involves firing a cold group, rapidly expending a 30-round magazine to heat the barrel, and then firing a hot group to observe any zero shift or group expansion. This rigorous testing validates modern barrel manufacturing techniques.
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