Hi CL..i have used Superfields for years and i have found them to be a good pellet...i am curently using them in the lightning as they are the only pellet that will fit correctly...i have not tried them in the S410 yet......personally , i would give the Bisley Long range gold a try.....superb pellet....only 7.60 grains in .177
we used to use the superfields in the 77's and they flew true and could kill stuff at very good ranges..good luck mate