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Reticle library · Leupold

Leupold Illuminated Boone & Crockett Big Game

Drawn to scale from Leupold’s own specification sheet, and checked mark by mark by a person. This is the same geometry Harson Ballistics draws your holdover on.

Leupold Illuminated Boone & Crockett Big Game — second focal plane, MOA subtensions

Drawn from Leupold & Stevens, Inc.’s published specification.

The numbers

Manufacturer
Leupold
Reticle
Illuminated Boone & Crockett Big Game
Focal plane
second focal plane
Units
MOA
Magnification
—

In the second focal plane the subtensions are only true at one magnification — check your manual for which, and dial there before you hold.

Subtensions

Official 2021 Reticles PDF page 6. Published angular values identical to non-illum Boone & Crockett page 5 (2.2 / 4.8 / 6.3 / 7.8 MOA holds; 2.2 / 3.0 MOA bar widths; 0.7 / 0.2 MOA line weights). Inner stadia and hold bars are the illuminated portion. SFP, true at highest available magnification. Illumination: official 2021 Reticles PDF p.6 draws the inner crosshair and holdover bars in red; heavy outer posts stay black. 2026 catalog lists this as FireDot Boone & Crockett. Colour red from the overlay. || 9 Oct 2026: the four hold bars were `taper` elements without y1/y2, which reticle_painter.dart cannot draw - the app drew no hold bars at all. Redrawn as the verified p5 sibling draws the same wedges (0.25 mean bar from 0.11 to the published 2.2 / 3.0 reach at 2.2 / 4.8); no number changed.

How this one was checked

Verified 11 Sep 2026 against 2021 Leupold Reticles PDF page 6. Read from vector strokes (pymupdf). This page splits by colour: the ILLUMINATED reticle is red (0.93,0.111,0.141) and the black duplex is ink (0.137,0.122,0.125), with gold leaders (0.808,0.689,0.391). The page carries three red views at different scales; the enlarged ones are CLIPPED, so extents were taken from the full-reticle view and only cross-checked against the enlargements. Scale 18.02 px/MOA in the large view, from all three published drops at once - 2.2/4.8/6.3 MOA measure 39.615/86.841/113.201 px, giving 18.01/18.09/17.97. Confirmed by fine line 0.219MOA [0.2] and heavy line 0.68MOA [0.7]. CORRECTED, a half-width read as a total - the OPPOSITE of the page-43 TMR error. The printed 2.2MOA and 3.0MOA bar widths are the reach from the vertical line to each bar tip, not the whole bar: measured 2.183 and 3.064 in the large view, and 2.18 and 3.06 independently in the medium view. The record stored them as totals (+/-1.1 and +/-1.5) and so drew both wind bars at half size. Now +/-2.2 and +/-3.0. CORRECTED, element type: the two wind bars are WEDGES, not bars. Each is 0.051 MOA tall where it meets the vertical line and flares to 0.451 at its outer end. They are now `taper`, which reticle_painter.dart fills as a triangle; drawn as plain hashes they were uniform-thickness sticks. This is why an axis-aligned run extraction found no edges for them - the edges are slanted. CORRECTED, three missing posts. The record had ONE post (below centre) and ran plain 0.2 MOA lines out to +/-30 elsewhere. It is a duplex: heavy posts on all four arms, 0.68 MOA thick, from 2.56 MOA on the top/left/right arms and 7.85 below, running to 51.4 (the view edge, not a spec). The fine illuminated cross is only +/-2.38 MOA horizontally and +2.38/-7.68 vertically - measured in the unclipped full view - so almost everything the record drew as thin line is heavy post on the sheet. NOT MODELLED, cosmetic: each post tip tapers from 0.22 to 0.68 MOA over 0.47 MOA before reaching full width; the record steps at 2.56. The small bar at 6.3 MOA has NO published width. Measured 0.34 MOA reach, 0.22 thick, and recorded as measured - the record previously carried an unsourced +/-0.6.

Subtensions are published by the manufacturer and reproduced here for reference. Confirm your own dope on a range before you rely on any of it. Harson.ai is not affiliated with Leupold.