View Single Post
 
Old 06-13-2017, 09:52 AM
Neumann Neumann is offline
Member
 
Join Date: May 2011
Posts: 1,422
Likes: 30
Liked 698 Times in 391 Posts
Default

There's nothing wrong with selecting 100 yards as the zero point, depending on the external ballistics. A high velocity round, like 5.56x45 or 7.62x51 probably better zeroed at 200 yards.

The offset between the scope and bore will shoot low at 100 yards, zeroed at 200. The closer you zero, the greater the deviation at longer range.

Slower rounds, like pistol caliber carbines, are best zeroed at 100 yards. They drop like a rainbow, and 100 yards usually gives you "deer accuracy" from 0 to 150 yards (- 7").

I use a program called "Ballistic" for iPad and iPhone for an objective estimate of external ballistics. Its tables show the deviation based on the ballistics, zero distance and offset. The software is $20 well spent.

Last edited by Neumann; 06-13-2017 at 09:54 AM.
Reply With Quote