I use a 55gal drum with the end cut out, and chained to a tree.  I put a heavy steel band around the drum at the top with eyes  to attatch chains.  I then suspend the drum from two trees so it will only tilt to about 15 degrees.  This slows the bears down, and they don't empty it so fast.  I load it with dog food, then pour 1 gal of pancake syrup over the dog food.  I mix 1 package rasberry jello in 5 gal of water.  I hang the bucket of jello water in the tree above the drum.  I tie an old towel to the suspension rope, then let it hang to the bottom of the bucket.  the towel acts as a wick to get the rasberry smell out on the wind.  
I use a .350 Rem Mag, or a .35 Whelen, in the stand.  My son uses a 45-70.  I also carry my recurve bow with blunts to run off the sows, and small bears.