A week ago I received a quanity of older, Remington brand, brass cased ammunition. I examined it today and immediately found several rounds with what I believe to be season cracking (SCC) on the shoulder. I mean 3 out of the first 5 rounds I looked at had the cracks. Other rounds in different boxes were also cracked on the shoulder. I don't trust any of these rounds now and will pull the bullets on all of them and dump the powder into my rose bushes. I am no metallurgist but with several unfired, unreloaded, rounds affected in different boxes with different batch numbers I am sticking with my season cracking hypothisis. Perhaps this will serve as a good reminder to others to examine your older brass cased ammunition, particularly if you store your ammunition in the same room where you clean your firearms, prior to firing it.