7mm mag ballistics
Posted: Fri Nov 07, 2008 8:36 am
I am trying to get a ballistic table for my deer rifle but I can not find the ballistic coeff. for a Winchester Failsafe bullet in 140 grain. I bought all that I could find several years ago when a gun dealer told me they would no longer be available. I have tried several sites and can't find it. I have found the muzzle velocity and energy for the load. Is there a formula that I could use to calculate it? Many thanks.