Went to the range yesterday and spent the whole day shooting it. 100 rounds.
Just to make sure it wasn't me I shot my 06 that I put together. It's the SPS Tactical not me. Skinney barrel 30-06 shot center center. Very discurigerin since the SPS Tactical is in the same stock, has the same trigger and same scope as the 06.
It would not group consistently with or without the brake. And evey time I took the brake off I got a string befor coming back to POI was close to POA.
I called my smith on the way home. He can look at it in a couple of weeks.
Guns are not dangerous! People are! RKBA!