Howdy,
Here is a GREAT short film on the essential fundamentals of pistol marksmanship. It features Bill McMillan, Marine and competitive pistol shooter extraordinaire. Noted for his Olympic Gold Medal in
Rapid Fire Pistol at the 1960 Rome Games, he also excelled with service pistol at the Nationals.
This was posted by USC (as in, University of South Carolina!)
CONTENTdm
His comments on trigger control are a bit contrary to modern training, but he sure got results.
Sorry, he chose High Standard over S&W for his .22, and a Colt Officers Model Match over a S&W K38.
But, at the 5:10" mark you can see the instructor has a S&W K frame rear sight installed on his .45 cal 1911.
Here's a related website:
LtCol William W. McMillan, Jr. USMC (Ret'd)
Enjoy!