Re: The single all-around rifle?
AR-10 T lower with GA Precision 18" mid-length Schneider SS barrel in Badger Ord Stabilizer Handguard with NXS 2.5-10x FC2 reticle, in Mk4 low mounts on a LaRue QD riser with standard A2 buttstock to save weight. Rifle is .308win with match chamber. Has Armalite flip up AR-10 bu sights and Butler Creek neoprene carry sling with detachable buckle & cuff. Sierra handgrip & Badger gen 1 charging latch. Weighs 12lb w/o mag, 12.8 w/10rd mag. About 37" long Can carry by pistol grip, arm down, and clear ground by about 5".
Not first choice for hunting mountain sheep, but it would work.
Not first choice for killing a Brown Bear in the yard or trail, but it would work.
Not quite as "handy" lever carbine, but 168/180gr bullet with longrange accuracy is 10x "better".
Not in same league as my Sako TRG 338/300 for longrange shooting, but the solution is to get closer...
Not a plinker, but with lightweight bullet handloads or cast bullets, it works.
Jeff Cooper's Scout Rifle is very much an all-around rifle concept, except for the scout scope idea. I tried a Leupy scout scope on my guide gun and didn't care for the eye relief and bulkiness of the scope. Owned a Steyr-Mannlicher Pro-M in .30-06 for a few years and took deer with it. Nice rifle. Was never motivated to own or shoot a Steyr Scout rifle.
Armalite semi-auto design has eclipsed the bolt rifle, (except for magnums), for many reasons; accuracy, no bolt to flick, 10-30rd magazine, no action to bed to a stock, integral pic rail or match iron sights, less recoil, shorter oal...
If you don't live where dangerous animals might maul you, then consider a 20" precision AR-15 with 77gr ammunition as an all-around rifle. Lots of game taken with 85gr bullets in 6mm caliber, and lots of game taken with slower moving .30-30 150gr rounds. I have recovered 75gr .224 hornady bthp match bullets from my rock backstop and some bent like pretzels, but all stayed together. Break a leg or shoulder and your game is down or trackable. Not first choice for hunting game, but if regulations allow .22cal highpower in your state maybe try the 60gr Nosler for deer or antelope? Can carry 2x the ammunition and if you are in a survival situation, hunting becomes an entirely different equation. Get's the weight down from an AR-10 by about 2lbs. Get a 1:6.5 twist barrel and shoot 90gr Sierra or JLK bullets, single loaded, but they work. (See link below for details on how the JLK 90gr .224 bullet delivers 2.5" vertical spread at 1000 yds in 15-20rd groups!)
http://209.85.173.132/search?q=cach...da&hl=en&ct=clnk&cd=18&gl=us&client=firefox-a
Not like I'm saying a 20" Service Rifle will shoot 20rd 2.5" vertical spread groups at 1000yds, but if you have the barrel twist and the ammunition, you have some pretense for taking the shot. What else is an "all-around rifle" unless it can do almost anything you might require?