Well, I FINALLY got out to the range to shoot it.
100gr factory Win Silver box, grouped 3 into an inch or less at 100yds.
Some miscellaneous hand loads did as well or better.
Once again IMR4350 with 39.5gr and 100gr Hornady's was the clear winner.
shot some 55gr NBT's at lightning speed, around 3800 fps or so and they grouped well too!