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Old June 9, 2019, 02:29 AM   #53
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Join Date: March 8, 2014
Location: Nipawin, Saskatchewan
Posts: 311
As far as wind affecting things more if encountered in the first third than the last, yes the bullet spends more time getting pushed around in the last but a plain English way of saying this is that if it gets off to a bad start it affects the whole trip.

Even in the absence of wind groups often open up more rapidly than what a purely linear relationship between group size and distance would suggest (meaning lots of guns and loads can do half inch groups at 100 that wouldn’t even come close to doing 5 inches at 1000). One thing that really contributes to this might be imperfections in jacket thickness and bullet concentricity. At close range these don’t matter all that much (visibly deformed soft points shoot lights out to 200 - 300 yards in my 243) but over distance and thousands of rotations it shows. Think of a washing machine that for whatever reason ends up loaded heavier on one side. At first you can’t tell, but as the cycle continues and it spins more and more it gets shaky and clunky and loud and sometimes even moves around where it isn’t intended to be. Laundry ballistics. This lines up with real life observations a heck of a lot more than the theory about spiral shaped trajectories and what is statistically observed on targets with many shots fired.
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