Well, I was trying to get through my usual 200 round range session today and had an FTF. I was like "ah ????". I thought I was shooting my old jammomatic Kimber that I've long since sold. I tried to slap the rear of the slide to get it to go into battery but it wouldn't budge. I pulled the slide back and ejected the round to look at it. There was a signifigant piece of the case that was stripped downd the side and tucked under the bullet. I was wondering how in the hell my glock did that but another shooter at the range came over and we concluded that it came that way from the factory. As you can see in the pics, the bottom on the bullet is dented which could only come from the downward force of seating the bullet which also folded the case inward in the process. If my gun did that, I would assume that the metal on the case of the round would be stripped or folded outward and there would be no dammage to the bottom of the bullet. BTW, I was shooting the WWB 115gr. FMJ from wal-mart. here are some pics.
Flip.
Flip.