If the longer plastic cushions collapse straight they
are just as good as older fiber ones, but they go
crooked part of the time it seems.I have federal one piece
hard plastic seal and cushion here, they use under their
sabot loads, that the cushion part is real short in the middle
of it and it crushes straight all the time.Doesn't cushion much.
But you know all they got to do is use slower shotgun powders,
and extreme or no cushioning isn't needed. It is like the
tall shotwads with seal attached to bottom, for steel shot,
that are not cushioned, they just use slower powders.
Like longshot, alliant steel, blue dot, etc. Ed