Blakesdad17
What gun are shooting? from that i might be able to tell you which sabot would work well with that gun...
SST/SW are the same bullet with different colored polymere tips.
SST's come with the thicker MMP HPH-12 sabot
SW's come with the thinner MMP HPH-24 sabot or the thinnest Yellow sabot. If that yellow sabot does not go down your bore, then there is not much that will.
MMP also makes a HPH-3p EZ load that they can sell to the public that is much like the yellow sabot....