Best left to a trained professional
MAJCHACHEEP made the world record 600 for men's 10m air rifle event in 1st,Jan,2000 in Malaysia.
It shouldn't be a problem. In fact Beeman and a few other companies make dual caliber rifles , Interchangeable barrels in .177 and .22, for some of there models.
You will have to contact the maker to find out.
any air rifle that fires a .177 pellet over 600 FPS should be sufficient
I suggest you contact Webley & Scot and ask for a schematic drawing of the Hawk Mk2 and see if they can provide you with more information. See the link below.
Your first problem is locating a schematic for the rifle. I suggest you contact Air-Arms at the link below and ask if they could send you one. The next problem is locating a Spring compressor in order to install the new spring. (Not Easy) Spring compressors are not easy to locate. you may want to have a Air gun shop do the repairs for you. I would look up "air gun repair" on the web and find someone near you to repair the rifle. Or see the #2 link below.
An Air Rifle is either a BB rifle or a pellet rifle. It uses air or gas to propel the projectile.
No
A sporter air rifle and what?
Are you asking how do you swap and air tank on an air rifle, or swap for and air rifle? In most air rifles you put it on safe and swap out the tank by unscrewing it and replacing it.
can i ship air rifle to trinidad and what i need