I got two very similar to those and they do not work well in my 590A1Hi, I bought some Tipton snap caps for cycling / dry firing drills. The gun will not fire with one of these in battery. The gun fires fine with nothing in the firing chamber, however it seems to cycle them okay. They don't seem super smooth going into the magazine tube, but I am not claiming to be an expert for sure. I have not had a chance to get to the range with this and see if normal live rounds will fire. Does anyone know if this is normal for these types of snap caps?
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I got several all orange plastic ones and they work very good but get worn out pretty quickly