I bought this gun and information from the internet indicates there are perhaps less than 3500 of these guns remaining. I would very much like to shoot this gun a time or two with a very light load just to say that I have. I have had people tell me not to shoot it and some saying go ahead. What is the best way to determine if this is safe to shoot and what type of light load should go in it? I believe it took a 2-1/2" paper shell originally. Appreciate any input.