This whole idea came up after going out and targeting some clays. I had the boxes of shells in the clear hyper tough container, but I could not fit 4 boxes of shells like I wanted so like most 3d printer people I decided to solve a "problem" that wasn't really one to begin with. I got to work and came up with this design that after printing 2 of them can hold 100 shells in the container. You can pull shells from the container or take the inserts out to use. The choice is yours! Have a Great Day!