Best powder for Grendel

[Londerko]

Gents: care to expand on what weight bullet(s) you're using with the 8208? Picked up a box of 123gr ELD-M and have pounds of 8208 at the house for my 77gr 223 loads, but have started a list of what powders reloaders claim to work best with 90gr-120gr bullets and those projectiles which are 120gr and up, based on user input across this forum and others.

I tested 8208xbr with 123 ELDMs on Sunday and my 18” BA barrel shot a 5 shot .572” group with 28.2 gr of 8208.
I have not shot them over a chrono yet
28 & 28.5gr we’re both well under an inch as well, 5 shot groups