Gunsmithing Chassis Build/Bedding

[jonesturf]

I have been thinking about building a chassis for my rifle on my manual mill. I measured the diameter of the action to just under 1.375". I can get a ball end mill that is that size but like I said its a bit under...maybe a couple thou. How should I go about making the receiver to stock contact? The chassis will be out of aluminum. Could I do a vee or similar and have it contact at 4 or 5 areas along the receiver? I guess I could bed it too. Looking for some input. I have a Bridgeport CNC but that's not running yet. Any help is much appreciated.

 

[jonaddis84]

Your best bet is probably to just copy what's already out there proven to work, either an AI chassis or look at a manners mini chassis

 

[bohem]

The majority of chassis approaches out there today are a V-block arrangement.

Depending on the receiver you're using you may or may not find it necessary to bed the V-block interface. Some factory actions still show notable regions of poor/no contact in a V-block and once the action is tightened into the Vblock of the chassis the result is unwanted distortion in the receiver.

 

[jonesturf]

I thought about that but I don't have access to them and I find very few pictures of the mating surfaces online. Anyone have any links? The V block makes sense though. What about turning the outside of the action ever so slightly? Its going to get Cerakote anyway.

 

[jonesturf]

Actually just found this thread that kind of shows it. http://www.snipershide.com/shooting/showthread.php?t=164865

 

[jonesturf]

Also found this. Took forever to find...I've been searching for weeks. So what I'm seeing here is a vee channel. Makes sense and easy to machine.