I was given an Axis in .308. I have ordered a boyds stock for it. Now after finding this site, I am thinking of a heavier barrel in the future. I want to see what the factory barrel can do first, but man, it is so skinny. I have also found out while doing break in, the low weight is not good for recoil. I'm feeling this thing needs more mass. My question is,

Are the wood stocks much heavier, and how much work is it to hog out the barrel channel to put a thicker tube on it?