A local here used to do the same thing. Buy cheap cull yearling heifers at the sales barn and the cheapest Angus bull he could find and sell them as breds in the fall. Only people that bought them, as I recall, were order buyers - for kill, as the regular folk knew what kind of animals he was trying to peddle. He soon just started keeping them for himself and calving them out. He really follows the markets, so he might have cows today, and be out entirely tomorrow and then buy the same number back a year from now. He is a fellow that makes real good money on cattle, because he has zero attachment to them and as long as the cow survives the winter and the calf survives the summer, everything is just dandy.