Looking for advice. I have a Savage 110 varmint heavy barrel in 22/250. Not one to leave well enough alone, I am thinking of changing the barrel and having it chambered for a 20 Practical cartridge. 20 cal in 223 case. So, other than the barrel, I would need a new magazine which I am hoping would be an easy swap?? Then I would need to change the bolt head, which I was told is not difficult? I don't know if thats true. Also, after a brief search I am confused where I would find the parts to do that. Any advice would be appreciated. It seems popular for guys to swap barrels in the Savage, so I guess I'm searching the wrong sites. Thanks for the help.