Epoxy?
JB weld is what I use for most applications.
If you're not familiar with the use & application of epoxy don't get the quick set stuff. Get the regular and read the instruction 40 or 50 times.

Mix up 2 pea sized blobs and epoxy something together.
Rough surfaces are helpful. It needs something to grab on to. Gouge & scratch the inside of the stock. Try to remove the "shiny-ness" of it.

Last, read this:
http://www.savageshooters.com/showth...e-Easy-Take-II
After you read it, read it again. Look at the pictures. Then, read it once more.
If you have any questions, drop me a PM.
I'll do what I can to help.
Happy epoxy-ing.

PS - Acetone is good for clean up. After it hardens, hammer & chisel is need for clean up.
Have a nice day.