15 calculators
Fifteen calculators for the numbers that decide an optic: MOA and mil conversion, turret clicks, ring height and objective clearance, sight height over bore, parallax error, exit pupil, field of view, mil ranging, zero distance, bullet drop, point blank range, wind drift, angle shooting and twist rate stability. Every one shows its formula on the page.
Every calculator shows the formula it used, separates sourced figures from shooter convention, and returns nothing rather than a guess where a published figure does not exist.
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A first focal plane low power variable, which is unusual and genuinely useful: the reticle subtends correctly at every setting, so a hold taken at 4x is the same hold at 8x.
Best for: an LPVO where reticle holds must be valid at any magnification
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The professional end of this catalogue. A 34 mm tube, a locking elevation dial with a revolution indicator, and Leupold building it in Oregon with a service department behind it.
Best for: a rifle where a failed scope is not an option
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True ballistic range with wind, computed in the binocular, from a maker with a service department that will actually repair it years later.
Best for: a long-term purchase with a repair path
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The reference precision scope in this price band. The turrets return to zero reliably, which sounds like a low bar and is the single thing cheap scopes fail at after a season.
Best for: a precision rifle that will be dialled hard and often
Check price on AmazonResearched, not professional advice. These are planning tools built on published optical and ballistic formulas. Ballistic results use a G1 point mass model from the ballistic coefficient the maker publishes, which is not radar data, so confirm any figure on paper at a measured distance. Confirm your firearm is unloaded with the action open before you mount, level, torque or bore sight anything, and verify a zero only on a supervised range with a safe, legal backstop.