The speaker, acting as a firearms instructor, debunks the myth that fully loaded magazines cause springs to wear out or lose tension. He explains that spring degradation occurs from repeated compression and decompression cycles, not static pressure. He also discusses how magazine design, particularly feed lips and follower design, impacts reliability with different ammunition types like FMJ and hollow points, noting that some firearms, like the Glock 29, may experience feeding issues with full magazines.
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