Yeah but 2 grouse will weigh more than the pocket rocket anyway. Unless you eat them at end of day but even then seems the 16oz for the slingshot wouldn't be much if it gives you a couple meals.Yeah… but that wrist rocket is 16oz and takes up valuable pack space. In contrast 4 of these rounds add 2oz and fit easily in my bino harness side pocket. Running subsonic there is a reason these loads are referred to as cat sneeze or mouse fart loads. Nowhere near as quiet as a wrist rocket, but not going to blow all the animals off the mountain side either. It's a compromise for sure, life is full of those.