Spaniel, much agreement, it takes a very tight barrel to use super glide sabots in fact they will not work in any of my guns because the ones that had a tight barrel I lapped out to.500.
A good rule of thumb is if your gun shoots the black sabot well it will throw the super glides all over. Lee
If you think your gun shoots well with the supplied sabot then try the Short Black Harvester they can be awesome with SW250 gr bullets.