Reply #83: I don't think you're following the conversation.

[losthills]

You're talking about pistol ammo. In World War two they had silenced pistols and sub-machine guns. Special Forces were still using these relics in Vietnam in the sixties. In the seventies they developed suppressors for "real" sniper rifles, 30.06 Springfield and .308 Winchester. They had to be used with specially loaded lower velocity rounds. You can't truly "silence" these weapons, but you can "suppress" the crack so that witnesses can't identify where it came from. Of course the technology has advanced since then and they have truly "mind blowing" weapons today.

However, a high powered rifle may not have been needed here. These boats were within rock throwing distance of each other.