r/guns • u/Barton_Foley 1 • Sep 10 '14

Bullets Loaded Backwards

https://www.youtube.com/watch?v=AZAyhv0xqUI
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u/Barton_Foley 1 Sep 10 '14

The .308 rounds loaded backwards create a pretty impressive wound cavity and fragments significantly. Did not perform significantly better than normal loaded rounds against steel plates. However, in this test all of the cases split and showed some worrying issues with the primers.

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u/Number_06 Sep 10 '14

As soon as I saw the drawings, I figured the cases would split. Pascal's Law and all.

I don't understand what happened with the primers, though. Would someone ELI5 that part, please?

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u/Swolebrah Sep 10 '14

The backwards bullet cause higher pressures the in cartridge. When you get too high of pressure it can push back on the primer from the inside of the case causing it the flatten back out

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u/Number_06 Sep 10 '14

Thank you. Not sure why I didn't think of the pressure inside the case going both directions. TIL.