Saw a program on a friends cell phone that had yellow targets and showed the aim points for. various yardages with input of data such as. Pellet weight. Velocity. , ETC DOES. any one know the name of this. program? or you are a
How tight is the fit of the tube to the barrel? Do I need to measure ny barrel OD with a micrometer then try to order the tightest fit, or just get close?