22 liters is equal to 22,000 milliliters.
lr stands for long rifle(uses a bullet) I dont know where you got 22l from
Impossible to answer without more information
50-200 usd
10-1000 USD depending on specifics.
20-50 or so
No published sn data.
100 or so
Did you load it with .22L (Long) or .22 LR (Long Rifle)? As long as the bolt opens rearward or can be removed, you should be able to safely remove the cartridge by gently running a cleaning rod down the barrel to push it out the breach. If the bolt will not open at all now, do not try to force it...take it to a gun shop/gun smith.
50-500 usd
$100
Can vary from 100-400 USD or so