Miniguns (of either the .223 or .308 variety) don't produce all that much "bass." In actuality, they sound more like the Jolly Green giant after eating too many legumes...
Now, for pure "thumpin'" bass, you've gotta really appreciate the stuff that's .50 caliber and above...
Why in this mode? I was at Knob Creek this past weekend, up by the line, and someone was firing a HUGE self-loader, that you could seriously feel, above the rest of the line, and I was standing about 30 yards from the line, with a bunch of people between.
Just gotta love
www.machinegunshoot.com... But it kinds spoils you for the concept of raw SPL...