Loading 44 mag and they are a little buldged at the bottom of the case. There is a little at the top with a 300 xtp. So it looks like a hour glass effect. Loaded 180xtp and just a buldge at the bottom. Called rcbs and they said it is fine as long as they fit the gun. They also said that when you use there carbide dies that is what you get a hour glass. Something tells me that is not right. I know you all can't tell me much unless you do them your self. I do know it is happening when I size them. there is about .010 between dies.