Re: I need some info
I built my hunting/target rifle out of savage 110 action. .308 Winchester
1-Stay with the 300 win mag
2-never used it. I have a B&C Medalist
3-You shouldn't have to do anything to accurize the action. Mine is a sub MOA gun out to at least 560 yards. That's as far as the range goes.
If it has the accutrigger see if you can tune it to your preferred trigger pull (2.5 # for me) and measure its consistency. If its not very consistent look at upgrading the trigger. Buy you a good barrel, don't gamble with the cheaper ones. Bed the action. You might look at adding a larger tactical style bolt lever to increase leverage.