trevj, I gotta soft spot in my heart for Martinis and take-down/switch barrel rifles, so please do post pix when you get this project done or near. Sounds like a neat little rifle coming. Have you considered a .25 Hornet or .270 REN? One is the "Quiet Hornet," the other is just the biggest cal. you can get a Hornet case to be (I think--could there be a 7x35mm built on the Hornet case????). I prefer the .25; easy to make, easy to feed, kills stuff very quietly.