I just shot 150 rounds from my GP100 with both eyes open. I shoot left handed and I'm left eyes dominate. My best six shot group from five yards was covered by a quarter.
"I love this gun!" Unfortunately, the right eye keeps jumping in saying "Look at Me!" My average group was more like five inches. For those that have done it, how long should I expect it to take before the brain stops letting the right eye interfere?