You don't HAVE to carry anything but a copy can save you some time.
Really? My FFL said that I should have the paper work on me any time I have the suppressor (once I get it... its my first one)
Shot placement is everything! I would rather take a round of 50BMG to the foot than a 22short to the base of the skull.
all 23 of my guns are 45/70 govt 357 mag, 22 or 12 ga... I believe in keeping it simple