I want to shoot F Class at 600 yards, from the bench,

I need help.....starting at the beginning.

I am left handed !!!

I am considering the 284 Winchester caliber.

I am planning on a Savage action.....not sure what.

For the 284 Winchester......do I need a long or short action???????
Is the bolt face the same for 308, 30-06, 243, 7mm/08, 284 ???????

I need suggestions on everything related to the gun and caliber.
I am good on the scope, rest, etc.

I need to do this affordably.

Is there a ready to go gun that will be reasonably competitive????
Is there an action and stock you suggest??????

All help will be appreciated.

Thank you.
Good Shootin!!
DarryH
Nebraska