I made a little video for you when I was at the range today. It actually is a bit longer than I planned for because I was testing a new mag catch button on my competition gun. Of course, the damn thing is tool long and engaged it with my support hand mid-string, dropping the mag. In a retrospect, though, it may have been helpful because it showed that I indexed the gun on target twice.
The setup is similar to yours, 7 yards, silhouette target, and a 1911. Mine is .45. The difference is that I taped my front sight the best I could. I even went looking for a black tape so there was no contrast patch upfront that I could use.
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Your result that you posted above doesn't have anything to do with cross-dominance. You should be able to center punch that target at that distance without sights. Even if you can't center punch it, you should be able to hold the group somewhere on the target. Your result is diagnostic of severe anticipation, flinching and subconscious fear of gun going off. 1911 trigger is a king of anticipation induction. You've received a terrible advice elsewhere on the site encouraging you to try .45. Of course the 45 is not going to fly out of your hands or break your hand bones but it will induce those tension responses even more. My sincere recommendation is to put down the 1911 for a bit, put away the PX4cc (it is a stupendous carry gun, I owned two, you're just not quite ready for it), make sure your B92 fits your hands well, get a 22LR conversion for it and work with it until everything lands within 2 inches of target's center.
In regards to eye cross-dominance:
- never close your dominant eye; instead turn your head so you're aiming with it
- that early in shooter's development a lot of great instructors recommend learning to shoot left handed.
Best of luck to you.