Did you get a special order rifle as Savage lists the FV 12 with 1 in 12" twist? My 12 BVSS is 1 &12 and it does very well with 52s and 55s but it"s not good with heavier stuff. I use Varget / Rem brass / Rem BR primers. It punches 1/2" groups most of the time.
Ground hog nice group!!!! My 12 won't do that it is more like a shotgun pattern then a group