SHOTGUNNED......

>> "shotgunned it" - Not sure. What's the sentence? Does it have to do with drinking a "shot" of alcohol?

Here're two more:
1) I finally just made the paper provocative and *shotgunned it* in all directions

2) The sender wanted message to be read
by everyone within reach, so he *shotgunned it* to the entire network.

A shotgun cartridge contains lead shot, or pellets. When the gun is fired, the lead shot spread out and pepper a large area. It is much easier to hit a target, often a wildfowl, with a shot gun than a rifle.