FWIW, Remington manufactures their 'Master Blaster', an 8ga. suppressed slag removal gun in two models. They currently provide loaded ammunition w/slugs up to 3oz. for use in coal fired power plant boilers, steel mill's and other industrial applications where assorted types of 'slag' buildup is a problem.

This probably best fits in the 'misfires' section, but the question seems to come up from time to time about those industrial cartridges intended use.