I would like to get a .25 WSSM. It will be a custom job and I am wondering what barrel length I should go with. I want the gun to be light. But I do not want to sacrifice a lot of velocity to achieve this. How much velocity would I loose going down to a 18" barrel? How much with a 20"?
I've heard the WSSM's and the WSM's are more efficient and can be used with shorter barrels.