Apparently we are over-gunned. Or, I haven't seen a pellet rifle this good.
http://www.mirror.co.uk/news/world-news/first-photos-radioactive-wild-boars-9996080

Air rifles are vastly under rated in the USA.
I own a comparable rifle from Theoben - it outperforms a .22 rimfire at close range. Note the range involved in the link
The higher power ones are treated as "firearms" in many parts of the world for good reason.
I'm also biased in thinking that given a choice where you put the bullets is of more importance than the size or number the bullets but that's another story
Jeremy

As I recall Lewis & Clark carried along a rather powerful Air Rifle on their little Westward Jaunt.
Growing up in the country where we always butchered our own Hogs these were routinely killed with a .22 RF. On those which I personally shot as best as I recall I always used a .22 LR but have seen them killed with shorts. It was of course always at near muzzle touching range & you had to know exactly where to place the bullet.

Folks use these air rifles to take large game, including buffalo.

http://www.extremebigboreairrifles.com/

Several wild hogs have been taken with pellet guns. In the video below, the guy is only using a spring powered .177 pellet rifle.
https://www.youtube.com/watch?v=tZeyMf74sIk

Another with I think .22 caliber.
http://www.dailymotion.com/video/xbzmg8_hog-hunting-using-a-hunter-extreme_sport

They even make a foe ten...

"Air" guns are not your daddy's Daisy Red Riders bb guns anymore. I watch a video of one a while back which shot a .45 bullet that went clean through a large boar from shoulder to shoulder and dropped him within five yards. If you shot one of those and it hit yourself in your eye like your mommy warned you not to do you would be dead.

Air rifles date back to before our Revolutionary War when if the British caught you with one in your possession you would be hanged. In some areas and countries "Air rifles" are treated as real gun in all respects.

[quote=KY In some areas and countries "Air rifles" are treated as real gun in all respects.

[/quote]

In Canada, any air rifle that is over 495 feet per second is treated as a firearm and you need a license to possess.

Is there anyone working on a double barrel air rifle?

I had a double barreled air rifle as a kid. It broke open just like a double rifle, to cock it. Sorriest air gun I ever had. Regulation left much to be desired.

SRH

I was in a store called Ollie's Army a while back.They handle a lot of overruns, leftovers, out of dates etc so never the same stock when you go in. They always have a lot of books at drastically reduced prices. On this occasion they had a book on Daisy air rifles for about $2.00 so I bought. It showed a break open double as you describe Stan, was your's a Daisy. It was said to have been made for only a very short time & is today considered a highly desirable collector's item among Daisy collectors.

Yes, that was it, Miller. I went through a lot of air rifles, some of them I remember with fondness. Not that one. That being said, as always, I got rid of the stuff that end up being worth something as collectibles.

SRH

Check these out for some interesting air guns: http://daystate.com/

If you live in Scotland you would need a permit for your Daisy Red Rider! I can take my stalking rifle up there to shoot deer without a problem but not an air gun without an additional visitor's permit. Crackers! Lagopus.....

I have a Daystate Huntsman Regal XL. This is a very nice rifle. It is as accurate as any .22 I've ever seen and the workmanship is exquisite. Best part is the near exhibition grade wood on this bad boy. And I can set up my range in my back yard.

I do most of my hunting with air rifles in UK legal power (12ft/lbs) and higher power on a firearm cert. The latest big bore airguns are real game changers . I believe there's a massive following in South Africa with some guns producing more than 200 ft/lbs which I think outguns most .22 rimfire ammo.

I saw a double barrel air rifle about fifteen years ago. Beautifully made. But I don't believe it could kill a wild pig.

I understand that in some parts of Indonesia they use some sort of air shotgun cartridge weapon in order to circumnavigate their legislation. Anyone ever come across such things? Lagopus.....

http://www.pyramydair.com/s/m/Air_Venturi_Wing_Shot_Shotgun/3777

Here's one lagopus, not the best looking gun ever but I'm sure it does the job, it shoots bolts too !
Gamo made a .22 pellet or shotshell gun a few years back, not in the same league but I personally thought they looked very nice. Synthetic stock with grip pads and vented rib.

Well this is a bit different.

http://www.hegmans.de/theo/airtwin.htm

Definitely a unique rifle. I bet it ain't cheap! One of those, "if you have to ask the price............

That is very cool. I struggled with the German until I got to "It'n killin der stuffin in der woodsen," and now I think I might have to track down one of these. Last year I shot an air bolt gun that'll put a crossbow bolt right through a wild pig and bury it deep in the dirt behind. Kind of a Tavor looking thing, not exactly elegant, but I guess if you want to quietly kill something with a minimum of tracking, that's the ticket.