Short range sniping
It's not very well known, but during the Viet Nam conflict the army played with a 45 caliber rifle loaded to subsonic velocities and fitted with a suppressor for VERY short range sniping in the woods. Barnes, of Cartridges of the World fame was connected with the cartridge development. It was based on a shortened 458 Winchester case.
In this case, it's not the range, but the concealment that makes it sniping.