Got this some time ago and finally got around to testing it first then shouldering it. Shoots great! .410, 37 1/2" barrels. I used 40gr 3fg shutzen, 280gr # 7 1/2 shot at 25 yards and peppered the hell out a paper plate. Later on I will work up some loads.
https://www.youtube.com/watch?v=Lk0fzWrRyH0