Old Raider: Yes, it will feed through a corn feeder. I mix my feed 50/50, corn and protein, in my spin feeders. No problems, but I do have eliminator spinner plates on all my feeders. I do this because I cannot afford to feed straight protein in my gravity feeder, as the axis will bankrupt me.
I'm having the same issue. We are near you and have lots of free range axis (and some monsters). Good problem to have (for the most part), but I'm afraid they're going to empty my gravity feeders too fast. For some reason, the axis don't tend to jump my hog panels and hit the spin feeders hard (sometimes they do, but mostly it's just whitetail), so I think it will save me money and the whitetail will get most of the benefit.
Do you think your whitetails get any visible benefit out of throwing protein from of the spin feeder? My concern is that it wouldn't be enough to help. How much do you spin per day?
What I have found over the last 5 years is that, if you're feeding protein, you'll have the axis on your place more often. So I decided to mix it in my corn feeders.
We are covered in axis. My neighbor to the South has Country Boys fill his 3000# gravity protein feeder every three weeks. Once the axis find it, they'll push the whitetail off of it. It never lasts a full three weeks, and I simply cannot afford to do this.
Honestly, I'm not sure if the whitetail really benefit that much, but anything helps. I look at it this way, I'm sure its helping them some, and its the best I can afford. I own 222 acres with 8 feeders running year round. Offseason they run for minimum of 4 seconds twice a day, during season, 6-7 seconds twice a day.
I've also put out some protein tubs, which I purchased from Country Boys. $59 for a 100# tub I believe. No updates on progress yet for them.
I also have a connection here at home for alfalfa, I can get it for around $8 a square bale.