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by ThrowawayR2 582 days ago
There are people trying. See, for example, Forgotten Firearms' review of the ArcFlash Labs EMG-02 CoilGun: https://www.youtube.com/watch?v=EwHRjgVWFno

Not particularly powerful and it's unclear that any amount of engineering can make it deliver more power to each round while still keeping it man-portable.