Apparently a lot of other people wondered the same thing -- about mag capacity, not the cufflink thing -- because the web is full of videos of people stuffing Aguila shotshells into their guns. They come in a 5/8-ounce load of 7 ½ shot at 1,150 fps, a buckshot load containing 11 pellets of 4 buck, and a 7/8-ounce slug at around 1,200 fps. You can fit a lot of them into a shotgun. I believe the record is 29, into one of those bullpup riot guns with two magazine tubes. However, the short cases don't cycle well in some pumps as the short hulls double-feed or sometimes fall through some carriers and out of the gun.