Gene, the friend with the one on the 250 has a factory set scope so he loads the factory ammo dup. loads the scope was set for. The problem he has is that he is used to dialing in the elevation and he says he grabs the wrong elevation make alot of the time. I think if he were to practice with it more he would become more proficient, but he carries to many different guns and none of the others have ballistic radicals.