Went to my local range today The Wiltshire Shooting Centre and tried these pellets,thought to myself these are going to be fast ,and yes they were
My Platinum shoots Daystate 4.53s 8.44 grains at 775 to 778 fps then put the H&N Feild Target T Green 5.56 grains Lead Free through the chrono and 930 fps =10.68 ft/lbs.
Then shot at some of the spinners we have at the bottom of our range ( 23 yards ) and they hardley moved, so fast out of the rifle,energy low.
So when i go to the Daystate Winter League next week at Worcester i will try them on the plinking range to see how they do,and i hope its a bit windy just to see how far they blow off course
Going on other light pellets that shooters have tried i don't hold out much hope for these as an HFT pellet,indoor shooting maybe out door well will let you know.