270WSM to .308 build help

[biggunner]

Starting with an 11 FCNS .270WSM, Id much rather have the .308 for cheaper shooting. I'm planning to put a shilen barrel and an xlr chassis on it with the 10rd detachable magazine. I can't seem to get any straight answers on what i need to change on the bolt. I realize i will need a .308/.243 bolt face, but not sure about anything else on the swap including the firing pin and/or baffle. Any suggestions would help, thanks

[stangfish]

Look for a pm Biggunner