great grouse gun, feed it #7 1/2's or #6's

I hunt doves, quail, pheasants, sage and blue grouse 7 1/2 is good for dove, quail and partridge but grouse and pheasant realy should be hit a bit harder to avoid wounding/losing a bird. That is why I rec. larger shot size besides grouse are not exactly small. When you hit a sage/blue grouse with 7 1/2 and you lose it or wound it remember this and bump up the shot size.

When the fella said grouse, I presumed he was talking about ruff grouse, not sage hens or blue grouse. Not many folks bother with sage hens these days. Or even can bother with them. The species is in trouble most places and half the time they are just about inedible. Blue grouse are located at high elevations in the West and not accessible to the bulk of American hunters. I was shooting the odds when I recommended the smaller shot for 'grouse' thinking the reference was to ruff grouse. No. 6 or 7.5 is good enough for ruff grouse, sharptails, or fool hens. Use larger shot for the larger more uncommon species. And I certainly would not recommend hunting sage hens with just a 20 gauge. They are tough customers - to knock down and to digest.

Ontario yup I started thinking about it and you are right forgot about ruffed grouse we dont have any here. I assumed the opposite, that he was talking about the larger grouse species. And yes they are tough customers but heck I eat jackrabbits also lol

I use #6 for most birds. 20 ga is more than enough.

Yes they are. Some people even use 28 GA.

A 20 gauge works perfect. The over under is good too because you can get a quick follow up shot if you need one. For chokes I would use a modified choke and a improved cylinder.