Winchester developed their PDX1 410 ammo for the Judge. Although TTAG has yet to test the ammo in Taurus’ big ass revolver, we’ve heard nothing but good things about it performance in that application. But we wanted to know how Winchester’s combo of three plated cylinder projectiles and 12 plated BBs would perform in a .410-firing tactical shotgun. Theoretically, PDX1 410 ammo could give new life to the deeply unloved genre; low-recoil and lethality in a shotgun being a good mix for women, teenagers and/or elderly folk. Winchester marketing maven Jason Gilbertson admitted that the company didn’t have a clue how that might—or might not—work. In fact, they didn’t even know there was such a thing as a Mossberg HS 410. There is. We bought one. The guys at Olin kindly shipped us a couple of boxes of PDX1 410. And off to American Firearms School we went. It was a marriage made in whatever place they made my first union.