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by rtkwe 3870 days ago
It'd slow down eventually, LEO still has a really thin atmosphere that would still affect a bullet, it'd be way longer than 2 miles though. Effective range makes more sense for a spacegun and would be more of your ability to accurately point and fire than the distance the round could travel. If you can only accurately hit objects within 2 miles the fact that the rounds would orbit for a while doesn't really matter.