I have a Sauer with a 1: 8.66 twist. Fired three Berger 156's at a 200 Yard target. All three key holed the target, so they were certainly not stabilized at 200 yards. This rifle shoots 135 and 140 grain bullets Sub-MOA. So now I'm wondering also, how much twist is required to stabilize the 156? (1:8 or 1:7?) Next time at the range I have a couple of boxes of 120 grain I'm going to try because I'm curious how this rifle will do with the lighter range of bullets.
Also, if you do get a 1:7 twist, does that mean it may not shoot 120's or 130's very well?