Re: 300 Whisper questions
Last I had and used sounded like a stapler being used, if fact that's what folks too to calling the gun, the "Staple gun". If used indoors on a hard surface floor the 22RF brass hitting the floor is often louder than the anything else.
There is considerable noise at the receiving end! The "whack", "crack" or "blooop" sounds we are familiar with become more pronounced and are quite loud by comparison to the firearm going off. (Or heaven forbid a round misses or is a pass-through, the "zingggggggg" is loud and lasts seemingly forever.)