I recently bought a Remington R-25 in 243. I bought this for an all around gun for deer, coyotes, and cats. I will also shoot hogs with it given the time to make the correct shot. I was wondering what needs to be done to convert this gun to a 308. I was thinking when going out on our yearly hog killing weekend that I would switch to a 308 or 338 fed. Since all these calibers are based on the 308 I was thinking all I would need to do is switch to a 308 or 338 barrel. That seems a little too easy to me so any info would be nice. I read that it is possible to just switch barrels and adjust the pressure but I have no idea how labor intensive that is.