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Originally Posted by MaRoFreK
OK so Its the .357 SIG and .40 S&W that are the same. Not the .357 Magnum and 40 S&W. That makes since. Yea i know the .357 and 38spl were close. I was saying we used 38+p rounds in or 357 cause there is not as much muzzle flash ect.
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well, its not really that .40 and .357 sig are the same.... you can't shoot one in another... you can swap parts between the two for the most part. You need to look sometime at the two and see, the back of the shell is the same between, they just squished down the front end and put a smaller caliber bullet. (not the technical terms). Same principle as putting the same sized engine in a smaller car.... its gonna go faster. Another interesting fact, .40S&W was originally made from the 10mm auto. The 10mm was made for the FBI, but it was so powerful that a lot of agents had trouble managing the recoil, so they made a shorter and less powerful version, the .40S&W (which is why some call it the .40Slow&Weak)
