I'll be installing pillars in a new wooden stock for my #10. I've read lots of good stuff on this site and Brownel's and think I have a handle on it. But with all the mention of OUTSIDE diameter of the pillars, I haven't seen any discussion of the INSIDE diameter of the pillar. I assumed it should be 1/4" like the bolt, but then there's plenty of talk about using lamp parts from Lowes to make the pillars. I don't recall the inside of such material being that skinny.
So the question is, does the INSIDE diameter of a pillar have to be 1/4", or should it be anyway?