I have a pre 64 FWT 30-06 I am thinking of rechambering/rebarreling to a .358 Win, 9.3x62 or .284 Win. Other than a new barrel for 1 and 3 on the list would anything have to be done to the magazine. As far as the 9.3 goes would do you think there would be enough metal in the original barrel to just make it a 9.3?