Brent, these are .060" fiber wads from John Walters. I don't know how long I've had them because I normally use .030" fiber. I was talking to Mike last weekend and he said that when he doubled up two .060" polywads that he had case stretching. Have you ever noticed that? I think I'm going to stick with the fiber wads for now but I know I'm in the minority there as you and Jim both use them with great success.