If you can't shoot your stuff well inside 3/4 MOA all the way to 1000 yards, even dreaming about spin drift is a total waste of time. There's a similar change in bullet impact with a 10 mph head or tail wind; do you correct for that 15 fps change in the bullet muzzle velocity relative to the air it goes through?
US Navy Distinguished Marksman Badge 153
Former USA Palma Team Member
NRA High Power Long Range High Master
NRA Smallbore Prone Master
Last edited by Bart B.; July 19, 2013 at 05:47 AM.