I would love to pick up a S&W Model 460 revolver. Shoots five shots of .460S&W, .454 Casull, and .45 Colt. I figure with .45 Colt shot shells I could take out smaller game, and with .454/.460 I could take out larger game. That's my theory anyway.

Sure, a rifle would be a better choice for hunting, but I hate lugging a heavy awkward rifle around. At least with the revolver I could stick it in my pack, or even get a holster made up. Plus, it could be kept out of plain sight in the pack or under a jacket. It gives the option of not advertising being armed (whereas a rifle on the shoulder sticks out like a sore thumb).

Not a perfect solution, but the best compromise I could think of that might work in a majority of situations. Then again, I'm no expert.

With that in mind, I would still probably carry a .22LR pistol or break-down .22 rifle along with it. The ammo is easy to find, easy to carry, cheap, easy to shoot, and it's proven on small game.

While out of production, and in no way a bullseye rifle, I really enjoy and often rely on a .22lr/.410ga Springfield Armory M6 Scout like this

Spare ammo storage in the stock.

Is that paracord on the barrel? Hmm.

I also have the M6 Scout. Carry case, sling, original from Springfield. I made one mod- the in stock storage-I drilled out one .22 space for the assembly pin, which has the reputation of getting lost, so a spare stored and available. I also have it scoped with see through rings. The squeeze handle/trigger can be used conventionally with practice, and I left the guard on, contrary to popular opinion and the original USAF version, because it gives you a safe place for the barrel to rest when reloading.

Are there any current production over/unders like this? All I can really find these days are disc models.

I've seen German makers, but none in US, I think. You can still find the M6 and the Savage 24 online for sale. If I had my druthers, I would get the stainless M6, or a Savage 24.
Like I need another!

Every time I look at this gun one wonders which idiot decided .22/410 was a wonderful combination for a survival gun.

.22 long rifle? Yes. Best caliber for taking small game. No question.
.410 gauge. No. I can spit father than its effective range. You might possibly be able to take a bird on the wing with it at close range, but would it not make sense to let it settle and then shoot it?

Before anyone complains that ain't sporting, might one remind you all that this is about survival. Not sportsmanship.

To me a better combination would be .22/.303 or similar. I am sure that other people would have their own views & one would be interested to hear them. Something that will allow you to take larger game and give you a decent chance against large predators.

I grant you that recoil might be a bit stiff, but its only for one shot.

20 rounds of .303 or ..... & 50 rounds of .22 would last you for quite a long time.

Well, I'd think .410 would be a bit limited, but I wouldn't be thinking about taking big game with it in a true survival situation anyway (though a .22 would stand a decent chance at that, too, if you were patient). 20ga or maybe even 12 might be nice. I think i'd settle on 20ga myself.
Even so, .410 would be useful.

I agree, although I'd rather have .30-30 or .308, being on this side of the pond. Or .44Mag, because it gives up some range but is a lot smaller per round.

The problem that rears it's ugly, ugly head everytime I mention this is sights. .22LR has a certain ballistic profile. The bigger rounds have another ballistic profile. Get one sighting system that can handle both. The best way would be to put optics on it, with a see through base and iron sights. So which one do you put the glass to? The other way would be to determine hold X-high/low at Y-range for one barrel and zero for the other.

It is a great idea, but I'm just not sure it can be made viable. Trust me, I've been trying to work that part out for a long time.

i would think the AR-7 and Scout are survival rifles while anything larger is more of a BOB weapon..