https://www.quora.com/What-gun-fighting-techniques-exist-Theres-obviously-a-ton-of-techniques-in-sword-knife-fighting-but-is-there-more-to-gun-fighting-than-cover-and-shoot
The only 'technique' to shooting is (1) sight picture, (2) trigger squeeze, (3) breath control, (4) steady position. Everything else is a matter ...