Just to throw some crap out there, transitional ballistics is a form of external and is actually more pronounced in some barrel twists than others.
What it really effects is a near range zero. Remember that the bullet crosses the line of sight (LOS) twice, once on the way down range and when, hopefully your LOS and POI coincide on the target. With some barrel bullet combination, your grouping potential at say 35 meters is worse than your grouping potential at 200. Reason is Transitional Ballistics and this is when the effect of the rifle is still present and before only external forces effect the bullet.
Clear as mud?
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Rick B.
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Wisdom is knowing it is great on a hamburger but not so great sticking one up your ass.
Author - Richard.
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