I wasn't going to get involved with this but an alternative way of controlling barrel harmonics is a tuner like the flush mount carried by Hoehn Sales (Ron). You are going to need a GOOD torque wrench (inch lbs) to torque the takedown/action screw and/or bug tuner depending on the route you take. Guess it depends on how much $$$ you want to put into your project. To me the bug tuner is cool because it is a more stealth way to tune a barrel but you'll find many of the shooting organizations like the ARA using a variety of barrel mounted tuners. Best of luck to you.