i bought some rottweil brenneke slugs for my 16 gauge. they seem to be about the best i can find here in northern ontario. i'd say try em out if u get a chance. i bought my'n from the kenogami gun shop which is just a short ride from kirkland lake, ontario. look em up, they might still have some in whichever gauge you're looking for. also, if you get a chance, try out the rio's, like claybuster said. i've only ever used their #4 shot for my 16 but they've been what i've sworn by since they day i've bought it. good luck in your search