I am having a problem with cracked necks in my .25 WSSM cases. I had two test loads of 18 cartridges each and when I was finished I ended up with six cases with cracked necks. Some had single cracks and others had two cracks. One had three cracks. At this rate I will be going through quite afew cases. Oh I forgot to say the cases were all new Winchester cases and one once fired win case.
I reload for my .300 WSM and have not experienced this problem with those cases. Is this something unique with the smaller cases?
I have been loading since the late fifties and have not had this problem with any other reloads. I have had split military cases that were old (.30 Carbine ammo), but never commereical or reloads.
What the hell is going on or am I doing something wrong with these WSSM cases? Help!!!!!!!!!!!!!!!