Have you had a chance to try them?i recently bought some from this seller in the EE
http://www.canadiangunnutz.com/forum/showthread.php/1333853-High-Pressure-Muzzleloading-Sabots
I just use bulk hornady black high pressure sabot with hornady 225-300 grain bullets. No sabot failures and tiny groups with 225 up to 2700fps and .5-75" three shot 100 yard groups. Actually used the 185 hornady as well up to 3000fps and shot great. Not problem finding blood trails with that one.