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Old March 6, 2013, 08:29 AM   #4
Cheap 870
Junior member
 
Join Date: November 12, 2011
Location: Ohio
Posts: 159
If your estimate velocity is around 2300fps & your sighted in for 100yds. I'm figuring anywhere from 6" to 6.5" low at 200yds.
If you were to bump it up to 2500 to 2550 it would probably be 5" low at 200.
Nosler has an app to figure this out & I believe you can go on Hornady's web page has a section has something to.
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