I've had one for a year now, and worked up 2 different hunting loads. I took it out last fall but unfortunately didn't get the opportunity to test either out
Hornady 123gr SST
Lapua Brass
28.0gr XBR 8208
Federal AR Match primers
2.26 COAL
and
Sierra 130gr Gamechanger
Lapua Brass
26.7gr AR COMP
Federal AR Match primers
2.26 COAL
I dont' have my velocity numbers in front of me, but the expansion threshold for both projectiles is 1800fps. BC's for both are quite similar, better velocity out of SST's, but I got better accuracy out of the Gamechangers fwiw.