Probably no related but...I use the federal hulls and have had odd things happen in really cold or really hot weather with a hot steel shot load. Cold weather sometimes the hull cracks, and I have had the brass crack. In hot temps(80 F) the pressure is high and the primers pop and the head will sometimes end up as a dome... Shooting out of a Browning auto 10. Using Alliant Steel powder. I don't shoot them on hot days anymore.
Kurt
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