Learn more › The 357 Magnum vs. 38 Special comparison might ... and they were converted to fire was the 38 Colt Short. When Colt developed the 38 Long Colt, which fires a 0.357-inch diameter ...

357 SIG is actually loaded to a higher pressure. The .44 Magnum has been ... 0.10-inch longer than the .45 Colt cartridge case (the 45 Colt is often called the 45 Long Colt).