Videos tagged with Heat Stress Testing

This guide details a heat stress and zero shift test for AR-15 barrels, as demonstrated by Karl Kasarda and Ian McCullum on InRangeTV. The procedure involves firing cold and hot groups with specific barrels to assess accuracy under thermal load. The experts conclude that modern pencil barrels, when properly manufactured with stress relief, maintain zero even when heated, with weight being the primary differentiator for lightweight builds like the WWSD2020.

This video details a test of modern stress-relieved pencil barrels against the historical concern of heat-induced zero shift. Expert analysis from InRangeTV demonstrates that modern manufacturing techniques significantly mitigate this issue, with Faxon barrels showing minimal shift compared to a vintage Colt SP1. The testing methodology provides valuable insights for rifle builders and shooters concerned with lightweight barrel performance under stress.

This comprehensive 1000-round review of the Palmetto State Armory PSAK47 Gen 2, presented by Rob Ski, offers an objective assessment of its performance and build quality. Ski, a recognized expert in AK-platform testing, details accuracy under heat stress, zero malfunctions across various ammunition, and solid magazine fitment. While noting minor cosmetic quality control issues, the overall verdict is positive, with the rifle exceeding expectations. Further testing is planned to 5000 rounds.