7mm mag ballistics
7mm mag ballistics
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.
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Ray P
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Re: 7mm mag ballistics
dbullock.........my one program showes .284/160 Winchester failsafe with a BC of .389. So the 140's might be a little lower. Sorry this all I can help with.
Later
Ray P
Later
Ray P
Life is an adventure and often to short. Make the most with family and friends. Shoot often and shoot a small hole. Love the 204 Ruger!! NRA Life Member
"We are never to old to learn"
"We are never to old to learn"