Look in the free powder company manuals for loads with lower velocity. If it's a more-or-less modern gun, don't worry about the pressure, only look at the velocity. 1050-1100 fps with 3/4 oz. shot should produce pleasantly low recoil and the skeet birds will never know the difference. I'm assuming the gun is not a super lightweight. I don't recommend taking loads over the Internet. Get them out of published booklets. Taking a load from the book and reducing the amount of powder and/or shot should not create a problem, IMO.
