i have a handfull of boxes of those in .22 still but dont use them .
not really sure whether they are genuinely high quality pellets or not and why they are not as good as claimed .
i did try them in my superten and hw100 to see what they would do but unfortunately i had a lot of flyers at 30m and some didnt even hit the 2 foot board i had the target on .
lucky i was out on a field with no one around as i dont really know how far off they went but i do know i had so many of them that were at least 6" off and many that were much farther away from centre .
ive only used them in rifles and even my bsa meteor doesnt like them but its possible they may be better in pistols of around 3 ft/lbs .
i dont know the differences in the prometheus range but the ones i have are white plastic or green plastic skirts .
there was a fella recently selling them for £1 per box on and it took some time for him to sell them all off .
think i still have some sabot bullets around too and thats another topic for discussion ..

cheers , ian