I have in the 219 Zipper, pretty similar, case capacity.
28gr with 68gr Hornady.
30gr with 63gr Serria SMP.
Quick load gives me 30gr CFE.223 @ 43 psi, for 3018 fps. 600mm barrel, and 63.75 for an OAL. with the 63gr SMP. for the 5.6x52R
yep I know there is a slight Día difference,