Swift A-frame are a well designed bullet in the CF world, I assume they take that same design into the pistol bullet field. Craig Boddington thinks highly of Swift A-frame.
The above was a quote from Peterson's Hunting, May 2008, in an article titled "Tipped and Bonded" by Craig Boddington. Notice in the quote what his "ideal design is" for a hunting bullet of "controlled expansion type", it is a long shank, with a perfectly mushroomed head of about 2x diameter and no weight loss. If you follow Boddington on bullets, you willhear him say this is the ideal for bullet design for a "balanced bullet", a balanced bullet is one designed for expansion without weight loss.
Chap