The numbers
- Manufacturer
- Vortex
- Reticle
- VMR-5 MOA
- Focal plane
- first focal plane
- Units
- MOA
- Magnification
- —
In the first focal plane the subtensions hold true at every magnification, so a hold is a hold wherever the zoom ring sits.
Reticle library · Vortex
Drawn to scale from Vortex’s own specification sheet, and checked mark by mark by a person. This is the same geometry Harson Ballistics draws your holdover on.
Drawn from Vortex Optics’s published specification.
In the first focal plane the subtensions hold true at every magnification, so a hold is a hold wherever the zoom ring sits.
FFP; the sheet: 'subtensions measured in MOA and remain constant at all magnifications'. The centre scales are illuminated (drawn red). Published: line .1; centre dot .1; red 4-MOA hashes 1.25, 1-MOA hashes .5; at the top of the upper scale a 2-MOA hash .75 and half-MOA ticks reaching .25 to one side; marks 1 MOA apart on the red scale, .5 apart on the black; side lines .2 thick; bottom line from 38, .2 thick. Drawn, not published (the sheet is to scale; read exactly from the vectors): red (illuminated) scales to 16 MOA left and right, to 8 up and to 36 down, open 0.5 at the centre dot: centred hashes 1.25 every 4 MOA and .5 at every other MOA; above 4 MOA the upper scale has half-MOA ticks on the left only, a .75 hash at 6 and a 1.5 hash at 8, where it STOPS - nothing is drawn above 8 MOA. Black outer scales from 16.5 to 20 left and right; the .2 side lines start at 20 and the bottom line at 38. Numerals 4-20 on the horizontal arms and 4-36 beside the lower scale. Lines drawn to 43 MOA (the sheet's frame is 39.7). The centre dot is drawn 0.19; the record carries the published .1.
Verified 8 Oct 2026 against specs/vortex/VTX_RZR-63603_VMR-5_MOA_6-36x56_RS_I_RI_ST.pdf page 1. Scale 4.5312 pt/MOA fitted to the hash pitch, centre (198.0, 221.102) = the red centre dot; every published callout then lands except one: the centre dot, published .1, is drawn 0.19 - recorded .1 (all listed in tools/build_vortex_ffp_grids.py). Geometry converted exactly from the vector outlines - every rectilinear ink subpath cut into rectangles from its own vertex coordinates, one element each - so rows, widths, spacing, which side of the line each tick sits, gaps and extents are the drawing's own. Grid dots taken only on the grid; numerals placed from glyph outlines, text from the value of the mark they label.
Harson Ballistics draws this reticle at your magnification with your holdover marked on it, from your rifle, load and conditions. Works with no signal and no account.
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 Vortex.