i agree with ironworker but my delima is when I buy the factory round I plan on buying a case of each so I can have the same lot number...... My main concern is my rifle has a faster twist than all other rifles I see in the 270WSM and I didn't know if that would cause an accuracy issue useing lighter rounds.... It is my understanding that a longer bullet (heavier) needs more spin but at what point does a fast spin affect a lighter bullet accuracy........... Oh and this is only a whitetail gun the distance will depend on what kind of groups i can get the gun to shoot with factory ammo for now