How much does barrel length matter? For the .45 ACP, it turns out that there’s not much difference across barrel lengths when using loads designed for use in commonly sized handguns.
9mm Effective Range - Range Tests with Gel
Loading The .45 ACP (Pet Loads)
Which is the most efficient SD caliber in a short pistol barrel? 22 LR to 44 mag.
Ayoob: Is the .45 Obsolete? - The Armory Life
Best AR-15 Barrel Lengths [Guide] - Pew Pew Tactical
Threaded-Barrel 1911 Pistols: Some Choices Come Up Short - Gun Tests
How Does a Short-Barrel Affect .45 ACP Ballistics?
The Best Self Defense Ammo - Interactive Ballistics Data Table
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45Super vs 10MM: Chronograph and Clear Ballistics Gel Data