That is an excellent point (no pun intended) Lee. Only a very slight deviation on how the sabot comes offs could drastically effect accuracy out at the 100 yd + mark..
I've also found that the Harvester's seem very consistant in the amount of pressure it takes to seat them - unlike the ones with the SW bullets.
I have yet to try the MMP sabots but sooner or later I probably will get around to it.