alright.. i have been shooting my STW for a while now without much trouble until today. a case split around the bottom of the case and when i looked at the other loaded rounds, they had "stress" marks in the same area so of course they would do the same if i fired them. the loads have been kept below maximum and this was only the fourth time the round was fired. the primer pockets have never blown out, the bolt has never been hard to open (ways that have usually let me know the load was too hot). ???? i am wondering if it is just a bad batch of brass. i have shot my winchester brass around nine times with no problem (different load). i bought some federal factory rounds for the brass as i always heard that federal makes good brass and the selection for STW brass is very limited. i shot the factories, and then this is the third time reloading. bad brass... or the loads just too hot??? any help or ideas is appreciated.