Gun for Hire by Mack Reynolds, Science Fiction, Adventure, Fantasy

The evening was dark, it was unlikely that the other even saw the circleof steel that was the mouth of the shotgun barrel, now resting on thecar's window ledge."Who's it?" he growled.Joe Prantera said softly, "Big Louis sent me, Al."And he pressed the trigger.And at that moment, the universe caved inward upon Joseph Marie Prantera.There was nausea and nausea upon nausea.There was a falling through all space and through all time. There was doubling and twisting and twitching of every muscle and nerve.There was pain, horror and tumultuous fear.And he came out of it as quickly and completely as he'd gone in.He was in, he thought, a hospital. His second thought was "Something went wrong. Big Louis, he ain't going to like this."