I've used both 9x19 and 7.62x39.
9mm - Dirty as hell, lots of flash and smoke, smells funny, very hot load, locked up my SW 5906, and my G19, steel case could be harder on extracter than the softer brass.
7.69 - No problems thru my SKS. Even cheaper than the 9mm and a pleasure to shoot. What a bargain!
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Anarchism: The radical notion that I am the sole authority when it comes to deciding what's best for me.
9mm - Dirty as hell, lots of flash and smoke, smells funny, very hot load, locked up my SW 5906, and my G19, steel case could be harder on extracter than the softer brass.
7.69 - No problems thru my SKS. Even cheaper than the 9mm and a pleasure to shoot. What a bargain!
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Anarchism: The radical notion that I am the sole authority when it comes to deciding what's best for me.