Have you ever seen someone shoot with a "hellfire 2000" or similar trigger activator?
you actually support the gun with your off hand on the forestock and pull the gun forward into your stiff trigger finger. Your trigger finger is in the trigger gaurd pointing across your body.
If youkeep your trigger finger stiff and pull forward with your off-hand with the right pressure, then the recoil will cause the weapon to "bounce" on your trigger finger, simulating full auto fire.
you can guess how accurate this is. Although, once you get good at it you can tear up pumpkins pretty good.
BE CAREFUL about focusing your attention on what your hands are doing and pointing the rifle up into the air or down at your feet!!
(please don't try this
, but if you do, don't shoot yourself, your pets, your pals...etc