I'm hoping someone can help me out because I don't remember a lot of details, but some time ago, this question on WB.SE reminded me of something I remember coming across (fairly sure it was a written story).
What I remember is two parties living on different celestial bodies, one of which had devised a way to catch packages that the other launched (using a railgun/coilgun, I think) by carefully targeting them to impact on a mountain slope. I want to say snow was involved (or it might have been some kind of foam), and also that this was being done "under the radar" as a sort of smuggling that was happening in addition to catching "sanctioned" packages using an inverse magnetic accelerator. I further want to say someone "higher up" found out about this and "requisitioned" the system in order to receive an important package (I want to say it was medical?), and that this was a fairly major part of the plot.
I believe this would have been published "relatively" recently (probably 20xx) and there's a very good chance it was published by Baen. I don't recall, however, if it was a short story or part of a full-length novel.
Ring any bells for anyone?