RE: What sabot do i use?
 

Any .429-.430 sabot should work with that .44 mag bullet. Whether you will need a HPH-12 or HPH-24 style will depend on your rifle. If you feel the rifle has a tight bore then go with the HPH-24 or Harvester (Green) Crushed Rib sabots, or the new E-Z glide (which I have not used yet). They should shoot real well out of your rifle.