I agree with 2 Pipers comments.

I also will tell you I for years shot my 28 Repro with the commonly available Winchester 'Max' loads with 1oz. shot. I've since read that 1oz. shot in a 28 is a dreadful load.....which surprises me greatly as numerous birds and clays fell stone dead when I pointed the gun their way and pulled the trigger.

With the heavy loads I have reliably killed plenty of critters heavier than a quail, including a couple very solid jackrabbits on the run, a skunk, and a few differen varieties of large birds.