I've never purposely hunted grouse, but have shot some blues with my bow and shot at some in SD during the phez season. I keep thinking these are fair sized birds, comparable in size to a chukar on the small end or even much larger in some cases. Why would anyone want to shoot such small shot at this large a bird? Now I've shot exactly one pheasant with a 3" 410 with 11/16 oz of 7 1/2's. But, I did wait for a crossing shot within 25 yds and made sure I had a good opportunity at a head shot. Normally, I select a #6 or larger for phez. Would not this be a more reasonable size shot for grouse?