I have a Remington 700 SPS Tactical chambered in 223 which has served its purpose and was ultimately a segway into a higher level of reloading and shooting. At this point I rarely shoot it and was thinking maybe I could repurpose it instead of selling it. What all is involved with changing over to a different cartridge besides a barrel swap? I am thinking maybe a 300WSM if possible or some other short action hunting cartridge. Do I need to buy a new bolt or does the bolt face have to be machined to size? Am I better off selling and using the money to buy a nicer receiver? Any input on the subject is appreciated.