That load is amazing. I don't use the 3" but i use the same thing and its the best slug i have shot. It's also one of the cheaper sabots out their. Most sabots run around $12 for a box of five but i can the lightfields at about $8-9
Here is a very handy and effective device I use to dispense corn with - but it could also be used to dispense any other seed or deer feed.
I had an old feeder that had a failed motor... I made a set of brackets to attach the feeder to the rear of the 4 wheeler - the lower one encircles the feeder and has a forward section with holes drilled in the outer ends of the bracket... these holes align with two 5/16" bolts that drilled into the rack of the 4 wheeler.
The upper bracket is an "L" shaped...