the 5/16'' is not as tight a wind as the 1/4'' and therefore a looser less stiff cable.
i remove my cable after use and that's why i can get 100 plus stoppages out of it. takes literally a couple seconds to remove. and a couple minutes to reload with no tools. if the inside drum is wet, it take a couple extra minutes to loosen 4 screws and remove the inner drum to clean and dry. but a dry drum keeps the cable from rusting and keeps the drum from spitting out muck.