The first thing we are going to discuss is the stance. You stance should be stable and have the ability to move forward, backward and laterally. Think about a short stop or centerfielders stance, or a fighting stance. Your feet should be roughly shoulder width apart with your shooting side foot slightly to the rear with both feet pointing toward the threat/target. Your knees should be slightly bent so as to allow them to act like shock absorbers. Your shoulder should be in front of your hips leaning into the gun. Bring the gun up to eye level, not gun down to arms that puts strain on your neck muscles. Gun pushed out under your dominate eye. Arms slightly bent at the elbow again acting as a shock absorber. Equal amounts of pressure from both sides. Remember a gun discharging is like water, it will take the path of least resistance!
The grip is one of the biggest problems I see with folks shooting. There is everything from the old “cup and saucer” technique up to the thumbs crossed on the slide and the weapon being held low on the back strap.
Step one, imagine that you are going to shake hands with someone, do you want a less than firm hand shake to show weakness, of course not. If shooting a revolver the grip first index point is as high on the back strap of the gun as possible so as not to impede the hammer when it is in rearward firing motion. If shooting a pistol again as high up on the back strap and up into the tang as possible. Anything less will allow the gun to rotate, or flip, more on it axis as it fires. The trigger finger should be along the slide, nowhere close to the trigger, and the three fingers wrapped firmly around the front of the stock/frame of the gun. Index point number two is when the first knuckle of the support hand contacts the bottom of the trigger guard. Then the support hand four fingers should wrap around the shooting hand three fingers. The palm of the shooting hand should fit into the opening on the stock of the gun so to maximize physical contact with the stocks of the gun on both right and left hand side. Index point number three is when the right thumb – if a right handed shooter contacts the back of the left knuckle and locks down allowing both thumbs to lock up pointing at the target.
By doing this it insures that the wrist and forearms lock up. To test this once you have obtained the grip keeping the four fingers tight of the support hand open them up and they should be pointed down at roughly a 30-45 degree angle to the weapon.
Following these simple steps will give you a good base to operate you weapon from.