bigbulls

Just purchase the swivel boring bit that Uncle Mikes makes. It makes all three size holes you need in one single step.

Just ask for this when you go to buy the swivel kit.

Or you can have a gunsmith do it for you. It will only cost you a few bucks.

If you do drill it yourself measure two inches from the butt of the stock and drill there. If you get it too close to the end of the stock it is likely to split the wood when you are carrying the rifle.