I would have stolen your design if I could have found it. I looked all over for a good plan. Yours looks like it is made of 1" boards. Can't read the design on the front.
I actually got my basic design from the Pennsylvania Game Commission. It is on the internet.
I then modified the interior and cut out a few chambers. Used plywood instead of sheet metal.
I just saw your original design and that is a very clever "Bat" Clark. Your wife designed it? My wife is a commercial artist, but I had to do my own design. Jack