Dogbite, you have to consider what your most likely or important use for a firearm is, and (if you have the option) get the firearm that meets that need.
If you have the funds, you want your usage/tactics to dictate your arms, not your tactics be forced upon your by your weaponry.
If you want very close-range defense (call it
1-49 meters), and that's your
only priority, a .308 bolt-action isn't your best choice. Since you mention a red dot, you seem to be thinking of up close and personal. At those ranges, a slide action ("pump"), lever action, or autoloading rifle would be preferred.
If you want a short to medium (call it
1-125 meters) range tool, your choices are wide open. Any rifle type is accurate enough for those distances, so you have to consider your other priorities.
If you want a rifle with long-range capability that's also useful for short distance, you probably want a bolt-action with a 2x or 1.5-4x scope. There's a lot of variance- something like the Savage Scout you mention would be okay, if you want to cover the
1-450 meter envelope, but
not with a short-range red dot sight. (I DON'T feel a sturdy bolt-action is much of a disadvantage in most situations, unless you are trying to stop an entire team of thugs inside your house. That doesn't seem like the most likely scenario to me.)
Do you plan to also hunt with this rifle? If so, what?
Do you see the potential need to make very accurate (less than 3") shots?
Is speed or accuracy more important to you?
How robust should this platform be?
How much power do you need or want?
Will ammunition availability be a major issue for you?
Is taking ethical taking of deer-sized game important to you?
If so, you probably want a little more than .223.
Is penetration through hard materials important to you? Do you want this ability, or not?
If so, you probably want something more powerful than 7.62x39mm. (.303, 7.62x51mm, .30-06, 7.62x54mm)
Personally, if I wanted a
general purpose/disaster rifle, I'd get something like a
CZ 527 in 7.62x39mm. You can use this to cleanly take deer out to 140 meters or so, and carrying it around in the woods will give you familiarity that will serve you well in an emergency. A good 2x scope will give you additional accuracy, and still be fast for closer ranges.
If you want a
dedicated close-range defensive carbine, and have the funds, an AR-15 16" carbine or M-1 Carbine would be my first choice. If you don't have the funds, any lever-action carbine in at least .357 Magnum will work fine out to 100 meters or more. An SKS, with practice, could also be a good choice.
If you want a hunting rifle that could also be used defensively, any sturdy hunting rifle in at least .243, with a 1.5-4x scope would be a fine choice.
Examine your priorities before you do anything else. Do you want a dedicated close-range warfighter, or more of a general purpose arm? How sturdy do you want?
My disaster/general purpose rifles are a sporterized 1903 with scope, and an unscoped sporterized 1917. My dedicated defensive carbine is a 16" AR-15 with a 1.5-4x AccuPoint illuminated reticle. My precision rifle/long distance hammer is a highly customized FAL-type rifle, but I'm not really feeling the need for multiple fast shots at 600 meters, these days...
John