Hi all
I've discovered the Nosler Custom 140 gr Accubond is excellent factory ammo for my 6.5 mm Tikka T3 LS producing consistent sub MOA performance. I have now laid in a supply of this ammo as I no longer hand load.

I am currently making up a range card to hunt river coulee mules using one of the ballistic calculators available online (JBM ballistics). The G1 BC for this bullet is advertised as .509 on the Nosler web page but my research indicates that the G7 BC may be the the more accurate one to use when plotting the Trajectory.

Can anyone help me out on this as I don't seem to be able to find out what it is online?
Also since I no longer have access to a chronograph I have chosen to use 2650 fps for the velocity input as I think this would be close to the actual velocity out of my rifle. It is the velocity advertised on the box of ammo. Does this sound in the ball park for a 22 inch barrel??

Thanks to all who reply.
Any help on this would be appreciated.