Especially with a Barrett .338 Lapua Magnum........
A number of strategically chosen sites across the nation - say 30 or 40 rifle teams, could probably cause a nationwide power collapse.
Know how long it takes to make, procure, ship and install a high voltage transformer?
We could be out of power for over a year......
.50 BMG would be even worse......
Probably, but this is about all the “how to” speculation that I want to do now. I’m not especially interested in getting a visit from DHS via an alert from the NSA.