38 Super and 38 Superauto is the same.
Long ago Colt made a round they called 38 ACP - 38 Automatic Colt Pistol. Then they put more powder in the same dang case and called it the 38 Super Automatic. They chambered it in the 1911, which was strong enough for it, but it will fit in the older 1908 38 ACP. Really, REALLY stupid thing to do.
38 ACP would be the 38 Auto. Same size as 38 Super, but about half the power.
Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297
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