I want to see how many people actually switch their barrels on there savage rifles to different calibers?

The reason I ask is I am thinking about either building another Savage in 6mmbr or just buying a 6mmbr barrel and switch it out periodically. The only thing that concerns me is I have spent a good bit of time on my current 6.5x47 barrel getting it to shoot at the accuracy I want. I am afraid that if I switch out the barrel I might mess up my load when I put the barrel back on the rifle. I can see that your head space will probably change a little and not be exact. I don't know how much accuracy I would loose or if I would loose any.... Anybody have any experience doing this? What were the results?

DoubleG