so I made it to the range today with some very limited ammunition.

I had 3 100 grain ballistic tips --- in the Brux barrelled Savage 260 they shot about 2.5" group
I cracked open a new box of 125 grain partitions and fired 5 of them. They grouped at about 1", maybe a little more but I had two of those shots I was not happy with when I let them go.
Shot a 3 shot group from my brothers reloads of 130 grain GameChangers and they were pretty much a one hole group. I am going to get the load data from him on those rounds and likely run with those. I will also try the rifle with 130 grain Accubonds, and hopefully they will be similar and even better if they were about the same point of impact.