What is .38 super?

The .38 Super, also known as .38 Super Auto, .38 Super Automatic, or 9x23mmSR, is a pistol cartridge that was introduced in the late 1920s as a higher-pressure alternative to the .38 ACP. Initially, it was designed to penetrate automobile bodies and the early forms of bulletproof vests that were becoming prevalent during the Prohibition era.

• History and Development: The .38 Super was developed by Colt, initially as a hotter .38 ACP. The primary purpose was to give law enforcement an edge against criminals who were increasingly using cars as cover. You can read about the history of it here: History%20of%20.38%20Super

• Performance: One of the defining characteristics of the .38 Super is its high velocity and flat trajectory. It typically fires a 130-grain bullet at velocities exceeding 1,200 feet per second, which translates to significant energy and improved penetration compared to other handgun cartridges of the time. Find out more information about the performance here: Performance%20of%20.38%20Super

• Uses: While initially intended for law enforcement, the .38 Super found a niche in competitive shooting, particularly in the International Practical Shooting Confederation (IPSC) where it allowed competitors to achieve "major" power factor scoring due to its higher velocity, before rule changes affected its popularity. You can learn about it's different uses here: Uses%20of%20.38%20Super

• Distinction from .38 ACP: Though they share similar dimensions, the .38 Super is a higher-pressure cartridge than the .38 ACP. Early .38 Super ammunition could be inadvertently chambered and fired in .38 ACP pistols, potentially leading to damage or injury due to the higher pressure. This issue was addressed by changing the .38 Super's headspace to rimless, making it headspace on the case mouth. More information about it here: .38%20ACP%20vs%20.38%20Super

• Popularity: The .38 Super enjoys a devoted following, especially among custom gun builders and competitive shooters. While not as ubiquitous as 9mm or .45 ACP, it remains a viable option for those seeking a high-performance cartridge in a 1911-style pistol. You can read more about popularity here: Popularity%20of%20.38%20Super