308 Winchester, will be shooting 168 grain match-grade ammunition, and are mounted with scopes with having MOA of total adjustment travel (35-MOA up and 35-MOA down from center).ĭue to differing tolerances, rifle #1 requires 10-MOA of down adjustment from the scope to be sighted in at 100 yards and rifle #2 requires 10-MOA of up adjustment.

As an example, let’s take 2 of the same 10 seemingly identical rifles mentioned earlier and see what happens when used for long-range shooting both rifles are chambered in. This is not a question that can easily be answered because of the previously mention tolerance stack. People often want to know how far can I shoot with a particular scope, meaning how much elevation adjustment they will have for long-range shooting. This issue can be rather frustrating to the average rifleman who simply wants to sight-in and leave the adjustments in a single position, but to the long-range shooter who makes adjustments more often, the issue is compounded. This is also why some scopes will reach the end of the adjustment travel without properly aligning to the bore running out of adjustment before you can place the bullet in the center of the target. As these tolerances stack, the alignment between the receiver and the barrel changes this is why 10 seemingly identical rifles will all require different amounts of scope adjustment to sight-in. When producing a firearm, there are many different components, each having a tolerance specification. When encountering an issue involving exhausted adjustment travel it is likely related to the alignment between the scope and barrel. One Piece Scope Mount w/ Integrated Rings.Archery Ballistics (Angle Compensation).

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