Trail Rider:
I made my own. Got two chunks of canvas and glued them together and made the loops by putting a case in and sewing it and moving onto the next until I got as many as i wanted. The buckle set up is leather and is rivited on. The shells, by the way, are of a slight bottleneck variety in 40-82 caliber. I got somewhere like 30-40 rounds in this setup. Maybe this will help or not but that is the way i did it. You can fancy it up by sewing strips of leather along both edges too. This is a labor intensive project but it helps when watching TV or something.