I have a target action RBLP with a .473 bolt face (.308) an would like to start shooting a 7 mm SAUM and need a bolt to accommodate that round which would fit my action. Do I need a whole bolt (if yes where can I find one) and if I have to transform the bolt myself what do I need? Someone suggested I would need a bolt head, a baffle (can't I use the one I have now?) and a firing pin? Is this accurate? Thank you and Happy New Year.