Quote:
Originally Posted by sc_rufctr
Ummm... I'm guessing this pistol can use all of these rounds.
Impressive!
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Hmmm... more like "dangerous!"
The .38 Special and .357 Magnum, of course, interchange in any revolver chambered for the latter. The .380 ACP is essentially a "9 mm short", and both share bullet and case dimensions that would allow them to be fired in the same revolver chamber, assuming the use of some manner of keeping them in place. Like moon or half moon clips. It does look like there is some sort of tab that grabs the extractor groove, so I'm guessing that is how they are held. .380 ACP and 9mm use a .355" diameter bullet, however, whereas the .38 Special and .357 Mag use .357" to .358" diameter. The use of the auto pistol rounds in a revolver that will accommodate the revolver rounds will result in lowered pressures and velocities, and mediocre accuracy. Manufacturers have, however, provided separate cylinders chambered in 9mm for their .357 Magnum revolvers.
What I see as "dangerous, however, is the use of the old .38 S&W. This old (and mostly obsolete) round uses a larger bullet and case diameter than the modern .38 Special / .357 Magnum. Any chamber large enough to accept the .38 S&W is too large to fire the two newer rounds, and will result in split cases and possible gas blowby back around the recoil shield, which will injure the shooter's hands and possibly eyes.
The fact that the 7.62 x 25mm Tokarev is shown along with these others, implying interchangeability, must either be a bad joke or the final indication these photos were put together by someone who has no idea what he is doing. It's a .30 caliber round, after all. It's kind of a necked down 9mm case, so the case diameter mimics that of the two other auto pistol rounds, but the bullets are only .312" diameter. They would simply rattle down any .38 caliber bore, generating very little velocity. Interestingly, while labeled as such in the rear view, I don't see one laid out with the other rounds in the other view. It's a very distinctive round:
I would like to hear the story behind these photos.