I think Dominic does, send Padom a message, im sure he's done load development with the 75gr ELD's.
I'll be using the 75 ELD's in the 22 ARC but not in the 5.56.
I used AR Comp with 80gr pills in 6 ARC (my data and targets are in the 6 ARC thread) but I dont own a 22 ARC.