I see a lot of questions inquiring about copper plated bullets. I use them and they certainly provide a lot of "bang for the buck" (pun intended
Wanted to pass along an experience that I had with them. My son went to the range and took a box of 180gn 40cal rounds that I had just loaded. His XDM jammed on the 7th shot. He took it to a gun shop on the way home and the pictures are what they pulled out after using a vise and hammering the slide back.
Bear in mind that this is ALL MY FAULT. As soon as he told me what the bullet looked like, I new that I had failed to flair the case mouth enough causing the edge of the brass to cut underneath the copper plating. I am very happy the round failed to fire.
Learn from my mistakes. 1. I did not use enough flair to properly seat the bullet. 2. I did not inspect the finished rounds closely enough to catch this.
I will continue to use copper plated bullets, more confidently now with this lesson learned.