A WTS thread for a Remington Mohawk in .243 got me thinking. How hard would it be and what would be involved in rechambering a rifle like that from .243 to .308? I know you could have the barrel rebored and rifled for .308, but I am not sure what concerns you would have about headspace issues as the .308 headspaces on the shoulder as does the .243. Has anybody ever done this? If so, how did you do it?