All of the components (hull, primer,powder,wad, and shot) in their individual packs will take up more space than flats. No argument there. BUT.... An 8# jug of powder and 3 boxes of primers take up very little space and is vastly more portable. Like I said, 3000 reloads from one 8# jug is the same as 12 flats. There are many great reasons for reloading. Currently, savings does not top of the list, but savings should not be the singular attraction to reloading.