I’ve worked through two nodes and found 1/2 to 1/4 minute results in both nodes. Both of the most accurate groups were in the middle of the firing order. I’ve been struggling to confirm these results, but have noticed something that might be a possible answer. When I got back to confirm my groups, I’ve been firing a couple foulers on a clean bore, or a single fouler just to get some heat in the barrel on a dirty bore. These foulers have been some 168gr Nosler Ballistic tips I’ve had forever and just figured why waste 215 Bergers. So my question is when I went to confirm my first node, I shot 2 168BT first since it was a clean bore. Then shot a 3 shot group, which was about 3.5”. The next 3 shot group after about 5 minutes was 2 1/2”. Another 5 minute wait produced a 1” group. All testing at 400 yards. All the same load. The second node confirmation testing went almost the exact same way except I only shot 1 fouler and one group. The first shot after the fouler was not where it should’ve been on paper. Bullet just hit at an odd spot off the normal area this powder and bullet combination have been printing. The next 2 bullets shot in correct area 1” apart. Could those 168gr BT’s be laying some copper that the 215 Bergers don’t like? Maybe takes a few shots to get happy? I’m just about ready to try another powder since I can’t seem to get any consistency. What does the brain trust here think?