RE: Homemade Deer Feeders???????
when we were feeding deer and pheasants the best gravity flow feeder we found was a 55 gal plastic bbl liner steamed cleaned.
With the drum sitting on the ground bung side up, drill two holes on opposite sides of the drum about 2" in diameter. Take the bung out and fill with corn, oats, barley, or what ever. then when you are where you want to set it up to feed, with the bung screwed back in flip the bbl so the bung side is down.
The feed will gravity flow out the drilled holes as critters eat. Works great for turkeys as well.
Very little waste. Only problem is that it is self feed and depending upon your game population you might find yourself refilling once a week.
If you have a friend that bends sheet metal he can make a really handy funnel that fits in the bung to help the task of filling the drum