This thread makes me proud of Jim See. It is great to see a dedicated shooter and a personable rifle smith work together to come to a successful conclusion.
A great amount of experience is displayed in this thread.
Good goin' fellas.
When looking at the last target where the BTs were wasted into the paper I noticed some subtle differences in the holes.
There are A-holes and B-holes. As usual Its the 'A-holes' that may be the problem
or at least give a hint. FWIW