So I picked up a box of 110gr XTPs in 357 on the cheap a while back and decided to give them a try. I loaded everything up, set my press and after priming and charging 25 rounds started seating bullets. Two bullets with no seen problem. 3 comes along and when I go to crimp it the case bulges in the middle.....weird. Recheck my crimp, it's fine. Measure 3 or 4 of the cases I have left, they are all the same. Two bullets later the same thing happens. After that I quit since I didn't have the time to mess with it left in the day. I'm thinking the case is at fault but I'm not sure. They are nickle marked CBC. I'm not familiar with that name but they looked fine, measured OK and this was a load just to play, it was the minimum load. If I liked it, I would get more serious and move to a dedicated case. Any ideas?