I had this Spectre II on a 10/22 and it was not quite as quiet as I wanted it with the bolt cycling making extra noise and the sound escaping with the blowback. My first 22 rifle was this Marlin so I had it cut down crowned and threaded. I ran some CCI subsonic through it and it is as quiet as a BB gun or airsoft. Perfect for the back yard squirrel hunts to pick off those pesky corn thieves
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So, I mounted the scope back on and shot this on private land at a cardboard box with a target stapled on it. The sound of the 22 hitting the box at 65 yards sounded louder than the gun firing.