Acco I believe makes a product called record rack. It is available in lots of different protein levels.We use it on our lease and it works good on spinner feeders with an 1-1/2" to 2" funnel. Also works good in a free choice feeder.The type we use is a mixture of corn and protein pellets with a net yeild of 16%. Be careful of mixing peas or soybeans with corn. We had some problems with moisture soaking into the beans and peas resulting in clogs in or spinner type feeders. If you go with pellets make sure they have a slick finish, not rough or extruded as they will soak up moisture as well.Do mix with corn to help with the clogging problem and help the deer adjust to eating pellets.