200 yd group

ES is extreme spread, the distance between the most widely spaced shots in a group.

Velocity spread is what causes the vertical stringing at further ranges. A 1 MOA grouping load with velocity spreads of 10 fps or less between shots may shoot better at 500+ yards than a load that shoots 1/2 MOA at 200 yards but has 50+ fps spread in velocity.
 
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