Fast Shotgun Loading System by Invictus Practical. This is very flexible Shotgun Shell Caddy. It is user configurable depending on your needs, technique or skill level.
Fast Shotgun Loading System by Ghost. This Shell Carrier you can load 4 rounds of ammo at once, or 2 rounds of ammo at once.
How to Size your Competition Shooting Belt. USPSA, IDPA, IPSC and 3 Gun Belts
Fast Shotgun Loading TACCOM System