I ask, because I've been using the same brand for over a year and one bag always filled my feed bin to the level top. Well, the feed store had a GREAT sale on another brand that's usually $8 more a bag so I bought 4 bags. When I dumped the first bag of the sale stuff into the bin it wouldn't all fit. I had at least 8 cups of food still in the bag. I don't have an accurate scale at home, but I'm tempted to haul a couple bags into work and see what the freight scale says. I'd like to know if the one is shorting me or the other runs alittle heavy.