Get a dilapidated older second-hand break-barrel of some kind and work through this ...
http://www.airgunbbs.com/showthread....ing-Gun-Tuning
you will get the idea and then you can move on to your pride & joy.
Get a dilapidated older second-hand break-barrel of some kind and work through this ...
http://www.airgunbbs.com/showthread....ing-Gun-Tuning
you will get the idea and then you can move on to your pride & joy.