Bought a 110FP that was 300WM from the factory...sold the magnum bolt head, need a 308 bolt head what parts am I looking for? I am selling ( or intend to sell) the Magnum bolt head stripped, are the ejector/extractor on the magnum bolt head swappable to the .308 bolt head? Or should I just call savagegive them my serial number and buy from them? Is PTG an option? Been hearing questionable things about them lately...SSS? NSS?