I am quite surprised that even do you only have a lead ban for duck and gees you also use steel shot on other of game. In Holland we have a total lead ban for many years now and the majority of hunters use steel shot because of its low price. But many hunters agree that lead shot kills much better.
Regular steel shot is usable at distances up to 35, 40 yards but not much further. I have shot game at longer distances but it is (almost) impossible to kill it cleanly and in most cases you will end up with a wounded bird. Even at shorter distances you always end up with quite a lot of winged birds.
Shooting at 60 yards with standard steel shot cartridges I would certainly not advise because you will never be able to consistently kill game stone dead at such distances. Simply because the weight of a steel pellets is to light to retain enough energy. Maybe this will improve if you use some super magnum cartridges but I still have my doubts
The type of steel shot is use:
Pigeons and grows over decoys 28,32 grams of number 5 or 6
Pheasants, ducks 32 grams or more number 5,4,3
Gees 32 grams ore more number 4,3. (Most of the game I shoot are greylag and white fronted gees and normally I would prefer Winchester 34grams, number 4 or gamebore 36grams of number 3)
For hares and foxes I will always use bismuth or tungsten. Because steel shot has not enough shock effect, especially if you don’t hit it right they will just run for hundreds of meters before they die.
I hope you can understand my English as it is not of a very high level.