I bought a smart parts progressive barrel for 29 dollars on sale. I was surprised at how much a barrel affects the gun's accuracy and it even reduced the amount of chopped balls. (ZERO) I did have to break one ball in there and then clean it to oil it up enough to shoot accurately though. Also, you should think about getting a lighter bolt for around $32. This decreases your c02 usage and increases speed and accuracy but be careful not to buy something for the wrong gun.
The trigger pull on the Victor is pretty long to I suggest shortening it.
http://www.ottersccustoms.com/trigger.html