Been reloading shotgun shells since the late 70's and I know what I use to decide when to toss my shells (deep cuts in the crimp plastic, messed up brass). Just wanted to know if others have found anything else they find important when deciding to toss their hulls. In the last four years using Remington STS shells I seem to be getting scary long life out of the hulls (not a bad thing). Even if I miss one with really bad cuts in the crimp they still seem to work fine. The only real issue I'm finding is when they get hard from the burning, seem to lose some pellets out of the center of the crimp. What are your experiences?