A month or so ago I was WWW sporting clays and after shooting there walked over to their skeet range for a couple rounds.Two other men pulled up so I now had someone to shoot with.They both break out new Ruger O/U's.The first one shot both barrels at the same time,every time.The other man's Ruger would only shoot the bottom barrel.Both guns went back in their Blazer.Out comes a couple of Citori's and we shoot skeet.They ain't happy.So I guess if you own Rugers you best carry back-ups.As a side note,they were brothers.