How about a muzzle loading 10 gauge double? I built this from a kit in my late teens. It's killed a lot of birds over the years. I had to quite using it on ducks and geese when the feds mandated steel shot, but it still serves as a wonderful upland gun. 100 grains of FFg and an equal volume of #6's for pheasant, #7 1/2's for grouse.