Has A Cartridge Ever Been Tried?

I'm not getting what you mean by "Off the shelf".
If you bought the carts for the Inovairtech? I'd call those off the shelf.
I mean pre packaged, precharged cartridges. Not necessarily relocated bottles that one has to mate to a projectile to make into a cartridge. Basically just like a firearm cartridge, only with compressed gas.
 
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All I heard of was something like this …

 
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There is this system.
 
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Don't overlook the Daisy VL that was an under lever airgun in .22 until the Alphabet org stepped in
My buddy and I had VLs, we purchased thinking they were underlever springers. They shot “caseless” .22 ammo, they were not airguns… The first time we tried to send pellets? They just blooped out of the muzzle. We killed many squirrels with ours, I sold mine before I ran out of the hard to find and fragile, caseless ammo.
 
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My buddy and I had VLs, we purchased thinking they were underlever springers. They shot “caseless” .22 ammo, they were not airguns… The first time we tried to send pellets? They just blooped out of the muzzle. We killed many squirrels with ours, I sold mine before I ran out of the hard to find and fragile, caseless ammo.
So true. Still have 3 VL's in there original boxes but there's no market because of the lack of ammo. They are useless without ammo unlike the HW 35 Barracuda that when ether ampules disappeared they could still be used as a springer
 
DevilsLuck, you're right that no "pre-charged as purchased" air cartridge has been offered with possible exception of some versions of the "AirMunition' system mentioned above. If what you had in mind was a one-use disposable cartridge, cost would likely be extremely prohibitive and the risk of leakdown after prolonged storage could be an issue.
In addition to the Saxby-Palmer and Brocock stuff, there were some Korean guns with DIY cartridges - one was the VanStar from the 90's as I recall.

Don R.