Larry, how about for shooting steel shot? Those loads wouldn't be killers for recoil in a light gun. The 3" chamber adds steel shot versatility for upland birds where it's required. And the drawback is ... what exactly?
Jay
Specifically, which 3" steel loads are you speaking of, Jay? Depends on what you think you need in terms of pellet count (pattern density) and retained energy to do the job. In order to match a 1 1/4 oz load of lead 6's, you'd need 1 3/8 oz of steel 4's. To give you 2 ft-lbs of retained energy at 40 yards, you need to have a steel load with a velocity of 1275 fps (pretty modest by steel standards); 1220 fps for the 1 1/4 oz lead load. Difference in recoil energy: 36 ft-lbs with the steel load; 26 ft-lbs with the lead load. For a lot of people, that increase in recoil would be a definite drawback in a light gun.