I have two AG OG Game Changers, a Fortune Cookie, and a Mini Cookie, the Mini Cookie will be lighter for carrying out to your blind, but not as stable as the larger bags. I have found the full size Fortune Cookie to be the most stable, fastest, and most useful during precision rifle matches, but it’s the biggest and heaviest of the 3 - which is why it’s the most stable.
For hunting, the Mini Cookie will be solid enough once you get it settled in, and lighter to haul around.
There’s also a new Pint Sized Gamechanger available from AG. Get it in the waxy canvas material, it’s VERY grippy, great stuff, and very stable if you know how to use it.
A trick with any barricade bag - don’t place it on the window like it’s biting the bottom, but lay it on it’s side and have it biting (pac man style) the side of the window frame, or at least biting at a 45degree straight into the corner where the bottom meets the side. They’re remarkably more stable when set up that way compared to the intuitive “bite down” position.
