I have a new LRPV in .223 with a 1 in 7 twist. I am interested in setting this rig up to shoot the .338 RUM cartridge. I know the action, being a single shot will support single shot loading and extraction of spent rounds, but I will need to remove the bolt to extract a loaded round. My question is:

What parts/changes do I need to accomplish this?

Thanks in advance for your assistance.