What shot to use for grouse?

When hunting grouse, a common choice is to use #7.5 or #8 shot, as these sizes provide a good balance of pattern density and pellet energy for the relatively small and fast-moving birds. A 20-gauge shotgun is often preferred for its lighter weight and manageable recoil, but a 12-gauge can also be effective. Ultimately, the choice may depend on the specific hunting conditions and personal preference.