One of my first trap guns was a Win. 1200 in Trap Grade. It would semi-shuck the fired casing also. I got where I could fire my round, and keeping the gun mounted to my shoulder, complete the shuck with my left hand, and catch the ejected case with my right without dismounting the gun.....all in one fluid motion. Looked cool, but never helped me break more birds... Don't worry about the situation. As others have said, it's a post-fire condition.