Defensive shooting is an important aspect of self-defense, hopefully never needing to be used, but you have to train yourself to be prepared. Though aimed point shooting and point and shoot (P&S) are the easiest forms of fast and accurate shooting in close quarters, aimed shooting will actually hold you down in an emergency tight situation.
P&S can be learned and maintained with little or no training. Basically, the index finger is placed along the side of a gun, pointed at a target, and the trigger is pulled with the middle finger. Common sense and safe gun handling practices must be used with all guns.
To shoot a pistol effectively, the front and rear sights must be aligned and placed on the target using hand-eye coordination. That's called sight shooting and everyone uses it when target shooting on the range and for competitions.
But for self-defense, sight shooting can be problematic and may prove to be fatal for the user. Based on the study of thousands of real close-quarters life-threatening situations, sight shooting isn't used in almost all of them. That can be due to bad lighting, the dynamics of the situation, or the activation of our instinctive "flight or fight" response, which is triggered automatically in life-threatening situations. That results in the loss of fine motor skills and near vision, which are both needed for focusing on and aligning the sights.
The bottom line is that unless you know and use an alternative way of aligning the sights and placing them on your target, you'll have no use in your self-defense.
The US Army calls for the use of quick-fire point shooting for combat at less than 15 feet and when night firing. The NRA also recommends the use of point shooting and has this to say about accuracy:
"...the ability to keep all shots on a standard 8-1/2 inch by 11 inch sheet of paper at seven yards, hitting in the center of exposed mass, is sufficient for most defensive purposes."
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