Not usually. There are several factors involved besides the spring, but the .22 will usually use a stronger spring to propel the heavier pellet.
No
A .177 caliber air rifle has very little recoil.
.177 airguns in india
The model 100 is a .177 caliber air rifle. The model 101 is a .22 Caliber rifle. Basically the same air rifle just different calibers.
It isn't dangerous. It could possibly exceed a 12 ft./lb. legal limit when it's close to that in .177.
No they won't fit. If you force it, it will ruin the rifle.
If you are serious about air rifle .177 competition then there are several to choose from (See the link below) But I would select one of the Feinwerkbau P700 models.
This is a .177 pellet rifle.
It all depends on the rifle, pellet and power source.
no
spring drives a piston that pushes air
When the rifle is cocked, a spring is compressed. Pulling the trigger releases the spring, which pushes a piston forward, The piston compresses air as it moves. The compressed air blows the BB or pellet out of the barrel.