Hate to hear that for you. I bought a NWTF Winchester around 1990. It was my first dedicated turkey gun and it did the exact same thing you are witnessing. I sent it back to Winchester twice and the best it ever got was it would fire sometimes. Talk about disgusting, call in a bird and "click", pump it, spook the bird and maybe it would go off and maybe not. I haven't owned a Winchester since. I know several guys who hunt them and have nothing but great things to say about them. I will say back then that shotgun would throw a wicked pattern with the factory choke.