I have a older 30-06 M77 Ruger that I was wondering how much trouble it would be too change it to a 25-06.Is the barrel & the bolt face all I would have to change? or just the barrel ? I'm tryin to do this as cheap as possible.It would be used for yotes & pigs mostly.Any info would sure help.I have no problem with the 30-06 just want to shoot 25-06 awhile THANKS GUYS. ANY general ideas on cost of this project would be of help also.