So…Combat Magnums.
Personally, I agree with Colt when they named the (original) 3” Python the “Combat Python”—or when S&W made the original 27’s (the Registered Magnum) with a 3.5” barrel option.
Here’s my personal version of the “Combat Magnum”-the S&W 65-3, 3”.
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However…the 2.5-2.75” versions are also pretty dang handy.
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(Clockwise from top left: 686+, 627 Performance Center, 640 Pro, 66)
3” is slightly better, though, because you get a full-length ejector rod that will fully extract magnum cases.