This is my carry set-up:
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And, a close up of holster and extra cartridges:
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When in a draw-and-shoot situation, I brush back my coat/vest with my right elbow and grasp the gun butt with my shooting hand, thumb naturally falling on the hammer. ( And not "hooking it.") And, yeah, my trigger finger does contact the trigger as I draw. I lift the gun free of the holster and sort of "dip" it down and forward, at the same time earing back the trigger as I raise my gun As the gun comes level press the trigger. Forearm should be just above waist level, muzzle at heart level of adversary.
As the gun is pulled back down from recoil, the thumb automatically cocks the hammer for the next shot, if needed. The second shot is usually made with the gun hand extended.
Note my holsters have no thongs or straps. When such a need arises, that is no time to be un-looping thongs or unsnapping snaps.
Never start your draw with the idea of "covering" or intimidating an individual. Your gun is your "ace in the hole" and surprise should be your weapon as well.
And, here I am posed with a good friend of mine, the .45 under my right hand:
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At church. I believe the gun is a .44 in this instance:
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Bob Wright