Quote:
>Sometimes I wish the 20th century cartridge inventors had got together and had a conference before coming up with new stuff, because of all the wierd little incompatibilities like this.<
Two different inventors on opposite sides of the Atlantic designing cartridges and guns for two different applications. The 9mm was made with a little taper to expedite extraction due to the high pressures that it operated with. The .380 was essentially a scaled-down .45 ACP that...like its larger cousin...operated with similar pressures. The Luger cartridge was essentially designed "For War" while the .380's intent was largely for use in small, easily concealed pistols for the civilian market. Because it could also be used in a straight blowback design, it was simpler and less expensive to produce. Essentially, a step up in power and effectiveness from the .32 caliber pistols. In that niche, it was very good. Of course, these days the .380 is considered by many to be an anemic round, barely able to stop a charging bunny rabbit...but that comes mainly from people who haven't been shot with one.
And this:
>Why not instead bring back five shot 32 H&R magnums? They seem to have similar ballistics and, wouldn't 32 H&R mag be able to be thinner as opposed to shorter?<
You've still got a pretty high pressures to contend with. A thinner cylinder means thinner sidewalls. Pressure is pressure, and the cylinder can't tell whether that comes from a .32 or a .44 magnum. If the stress exceeds the yield strength of the steel, it can be dangerous.