[Indrid Cold]

380 is a "9mm short"; the same bullet with less powder behind it, for semi-auto pistols. .38 is a revolver cartridge with more powder behind it than the .380. I don't think the bullet is the same, but yeah, the diameter is real similar. .38 curiously has the same diameter as the .357 (magnum).

[cinFLA]

I don't think the bullet is the same, but yeah, the diameter is real similar. .38 curiously has the same diameter as the .357 (magnum).

One refers to the land dimensions, the other the groove dimensions. A subtle difference to make the new cartridge distinct in the minds of the advocates. The .357 cartrige is much longer than the .38 and will not chamber in the .38 revolver. However, the .38 fires nicely in the .357 with the .38+P making a nice inbetween load.

[Libertina]

LOL My brother likes his 454 Casull. powerful :)