I took my S&W SD to the range yesterday, brand new never fired. I ran a box of 50rds. Federal 165gr. FMJ's through it had no problems so far as FTF's or FTE's but when I looked at the bullet casings they were crimped at the rim in which there was over exspansion & the rds. weren't coming flush with the bore. there was nothing wrong with the ejector either, D: I'm not sure what's causing it but it's making the gun very unsafe to shoot & if it continue's to do so I'm gonna sell it & buy a Glock. 23/19 Any idea's what can be causing it?? O I also put a box of Winchester 155gr. JHP's through it 30rds. & it still had the same problem.