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Questions about a calculator, a recommendation or a mounting problem are welcome, and so are corrections. If a figure on this site is wrong we would far rather hear it than keep publishing it, so please include the page and the number you are disputing.

Telling us what the optic is and what it is going on makes almost every answer better, because most of the useful questions in this subject depend on the objective diameter, the tube size, the receiver and the distances you actually shoot.

What we can help with

• Which ring height an objective needs, and why published heights disagree with each other
• Whether a scope has enough elevation travel for the distance you want
• Reading a drop table, a come-up or a wind hold
• Why a scope will not hold a zero, and how to narrow down which part is at fault
• Corrections to any number on the site

What we cannot help with

• Anything about firearms, ammunition, reloading or gunsmithing. This site covers optics and mounting hardware, and questions outside that are better answered by a qualified gunsmith.
• Warranty claims, which go to the manufacturer, all of whom in this catalog handle them directly
• Legal questions about hunting, land access or permitted cartridges where you live

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Researched guidance, not professional advice. Always confirm your firearm is unloaded with the action open before working on it, and verify any zero on a supervised range with a safe, legal backstop.