The rounds that Evan Marshall and Ed Sanow found in studies of gunfights to be in the 90 percent range for likelihood of stopping the fight quickly tended to be 115-grainers in the 1,300 feet per second range. During the test period, when this was my main carry gun, I kept it loaded with the famed Illinois State Police load; Winchester’s 115-grain +P+ at 1,300 fps. From frigid Chicago in winter to sultry Cairo in summer, the Illinois troopers found it to open up and work from their 4-inch S&W service pistols for almost 20 years, no matter how much heavy clothing the opponent might be wearing.
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