Take the necklace and feed it through the punched holes. Now you have a shotgun shell necklace!
I made a shotgun shell necklace with a used shell. I used an old shotgun shell, a hole puncher and a necklace. My plans did not change throughout the project. I made this because it is to remind me of my first shot ever. Other people can use it for that or another reason. I had no help at all. I made this at home. What I would do differently is drill a hole through the metal part instead of using a hole puncher and hole punch the plastic. The biggest suprise to me was that it was way easier than I thought.