After shooting my first 3 shots, I remembered the advice Brutuz gave Dademoss about stance. I made adjustments to my stance and I started holding the sights on the target longer. Before I would drop the pistol down to see my shot placement now I started watching shot placement through the sights.
Crosman 1377c, factory sights, 6 pumps, Crosman .177 Destroyer pellets 7.9gr, standing, 2-hand, 64*f sunny, light breeze. Score: 140/150 3X