bolt changes needed 110 in 223 going to go 6MM BR

[ger42]

I have an older 110 in 223 I want to rebarrel in 6MM BR what do I need to change on the bolt?

[short round]

Change to long action bolt head, they have longer shank than short action. They are same for 6mm 308, 22-250, 30-06 family of cartridges