I like that. I seem to remember a foam I had to use when the less-than-thoughtful DishNetwork guy did his "custom" installation...through the masonry in the front of our house, running that ugly black cable along the side of the house we moved into. I re-ran it, but was left with a gapping hole in the house. I shot some expanding foam into the hole, then cleaned up the overflow, both inside and outside.
As I remembered how well that worked, I wondered how that would work in the stock. All of $5. I then wondered about filling it a bit with some shot, to add some weight too, but wondered about the balance.
1100 shoot so well. I would bet the heaviest load I could find would still feel better than a regular turkey load in a Mossberg or even 870.
Any thoughts on that approach? I stuff the stock in the meantime. Thanks