Bedding an SKS makes that much difference?
A 4 MOA will become a __?____ MOA, by bedding (fill in the blank)
I'd be lying if I told you an exact number, because it was quite a while back that I found the article describing how to do it. I seem to remember the writer saying that it cut his group size in half, or something like that. I just remember it being a pretty remarkable difference.
You could google "sks bedding" or something like that, and maybe find the procedure. I can't do it at work... weapon websites are not allowed. I still don't know how this site slid under the radar, but I'm not going to ask any of the IT people.. (don't ask, don't tell? )
I think there is some bedding around the magazine and action, and some at the back of the action... like I said, though, it's been a while since I read it.