Short version of a question: getting much better groups at 25 yards shooting at white 3x5 card then shooting at 5.5 black NRA bullseye. Analysis of bullseye suggest trigger control or anticipation error. Why and why?
Long version, if anybody finds details important: shooting well rested and in good mood, best unsupported 5 round group at 25 yards at 3x5 is 2 inches, all rounds in left lower quadrant of the card. Best unsupported at bullesye is 2.5 inches, 2.5 inches left and low.
Shooting tired, 20 rounds into each, half off bags, half unsupported, the bullseye shots all left and low. 3x5 card, out of 20, 12 shots are on the card, couple of flyers, and few close to the card, not much difference between supported and unsupported.
What I can't understand the most is why my trigger control or anticipation management get worse depending on target contrast.