Regarding noise, I saw a description of a guy that made a large insulated tube that he shot rifles through to reduce the noise. He said his wife couldnt hear him shoot a 375 H&H from inside the house. Ive thought of a shoot house with baffles to reduce sound to the neighborhood.
Suppressors on guns are cool, but they dont always easily adapt to everything one may wish to shoot and arent legal or affordable for some.