Andabeer,
You are partially correct, sir!
As originally developed, the .38 Special never did use a heeled bullet, as far as I have been able to determine.
However, the round that it was based on, the .38 Long Colt, DID use a heeled bullet when it was originally designed, but that didn't last all that long, either.
Smith & Wesson developed the .38 Special hoping to capitalize on the .38 LC's known lack of stopping power (INCOMING DEBATE ON WHICH STOPS BETTER!!!
), and simply lengthened the .38 LC. They hoped it would appeal to the military as a service round, as it could use some of the same production machinery. The military wanted the .45 ACP instead.
Heeled bullets were originally used in many of the first brass and copper cased pistol rounds, and even many rifle rounds.
The .38 S&W and the .38 Short Colt both used heeled bullets. This was later changed when the reduced-size bullet was adopted (easier to make the loaded rounds, and used less lead). The problem was that there were a lot of the old revolvers with a true .38 bore. The solution was to make a bullet with a large hollow in the base. On firing, the sides of the bullet, or "skirt" as it is called, would expand into the rifling in the older guns, giving OK accuracy, while the round worked perfectly in the guns with the newer, smaller, bore diameter.
As originally developed, the .45 Colt may also have had a heeled bullet, but I'm not 100% certain about that.
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Beware the man with the S&W .357 Mag.
Chances are he knows how to use it.