vmartin, we run a couple different mixes through ours. protein pellets 16% 1/3, split peas 1/3, corn 1/3 and the other mix we use is the pea and pellet mix. The feed store premixes it and whatever they have enough of is what we buy. It only cost a few cents a bag more than corn, thats why we use it, they get the benefit of the protein and the peas and sometimes they get a little corn(candy) and it cost just a few penny's more. We have been feeding it for 3 years now and suprisingly when we first started it didn't take long for them to get started on it....I am sure there are some other guys here that do some mixing of other produts too, it is just too easy for us to buy it already mixed, versus hand mixing it, of course we are buying like 40 sacks at a time though....Good Luck with it~~~~