It's not difficult, I have done it for most of my rifles. I don't like rails. All of the metal in the middle is wasted weight, I also like stainless bases on my stainless rifles. You don't need to drill any extra holes. Use a TPS "Base-Bed" jig and you will have perfect base alignment.
[Linked Image from i.postimg.cc]
[Linked Image from i.postimg.cc]
[Linked Image from i.postimg.cc]