Are you saying your trying to feed protein through a regular spin feeder? In my personal experience, this rarely works out well long term, but to maximize your chances you might try:
a) metal barrel, well sealed
b) slip-on metal lid, NOT a clamp lid (protein needs to breathe)
c) minimum 2" down spout at your funnel
d) Eliminator plate which seals up against bottom of down spout will work out well.
Even all these things are no guarantee. All it takes is a little bit of moisture getting in the feed, or an infestation of mites or weevils for things to clog up.
Edited by TxAg (08/31/16 10:15 AM)