This video provides a data-driven comparison of 9mm firearms with varying barrel lengths, from a 4.3-inch pistol to a 16.37-inch rifle. The Banana Ballistics host uses a Garmin Xero C1 Pro chronograph to measure velocity and conducts tests for accuracy, penetration in various media, and performance against steel plates. The analysis reveals that while longer barrels offer velocity gains, especially with +P ammunition, the practical benefits for accuracy and subsonic performance may be less pronounced than expected.
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