I had a set in a 351W with a B+M mini blower on it, 8#s of boost. I over reved the motor at the track and broke the ring lands off of all the pistons on the drivers side. All the chunks (about 1 1/2" long each) went out the exhaust. I will never build another performance engine with hypereutectic pistons, they leave for no margine for error.
1979 Mustang coupe, EFI 393, A/A intercooled Eaton m122, 4r70w trans, Megasquirt II, T-top swapped in.
1990 Mustang, 545 BBF, C-4 with brake, ladder bars, tunnel ram with two Predator carbs, solid roller cam, 9", 390/45r15 drag radials.