I just had this finish up this past week and was able to do some load testing at 300 yds
Stiller Tac 30
Bartlein Barrel 19"
Manners T5a Molded Desert Sand
Sightron 6-24x50 LRMOA
This is with Hornady 140gr BTHP
New 7-08 Brass, so it still needed to fire form
The top Left group is 5 shots, Measures 3/4" CTC I think it can do better judging by the horizontal stringing.