I always wondered what 410 buckshot would do out of some of the current 'self defense' pistols on the market these days so I figured I'd make that happen. I used the 2.5'' Remington HD 000 buckshot load, the Clear Ballistics "FBI Spec" gel, and a Bond Arms Texas Defender (3'' barrel) for the test. Here's what I found:
-2.5'' pattern at 7 feet
-Penetration was 8.5'' to 12''
Here's the video of the test and what I think of the results: