This video delves into the complex engineering challenges of semi-automatic shotgun design, as explained by Ian McCollum of Forgotten Weapons. The primary hurdle is the rimmed shotgun shell, which complicates feeding and cycling compared to rimless cartridges. The video highlights the vast energy variance in 12-gauge loads and discusses various action types (long recoil, inertia, gas) and their inherent trade-offs, underscoring why pump-actions remain popular for their versatility.
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