I have been loading the Nice Shot for ducks and geese this season and can tell you it works. the ducks are dead on the water and are hit with authority as long as I do my part. I previously have been using Kent Matrix with excellent results as well, but at $3.50 a shot, it hurt to miss!.
the Nice shot is soft and cannot hurt our guns. I shoot an L.C. Smith Grade 2 from 1902 with nitro barrels. Still mirror shiney. If you look to IMR powder loading charts, you can get a 1 1/4oz. load at 1325fps with only 8200psi, from memory.
Nice soft shooting killer load for ducks. Costs about $1.60 per l 1/4oz. so shells are about $2 each.