The numbers
- Manufacturer
- Vortex
- Reticle
- ECR-1 MOA
- 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.
Reticle library · Vortex
Vortex ECR-1 MOA
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.
Scopes with this reticle
- Golden Eagle HD 15-60x52 SFP
Other Vortex reticles
Subtensions
SFP; the sheet: 'subtensions measured in MOA and correspond to magnification at 40x' - NOT the 60x top of the zoom. Published: centre dot .095; line .016; posts .13, side posts from 6, bottom post from 10; horizontal ticks .25 at odd MOA and .5 at even; vertical hashes .75 at even MOA. Drawn, not published (the sheet is to scale): horizontal ticks hang BELOW the line only, every MOA from 1 to 5; vertical hashes below centre every MOA to 9, centred, .25 at odd MOA; open 0.5 around the dot; no line above centre; numerals 2 / 4 under the horizontal arms and 2-8 beside the vertical scale. The line is drawn 0.020 on the sheet; the record carries the published .016. Posts drawn to 11.1 MOA (the sheet's frame is 10.6). Not illuminated.
How this one was checked
Verified 8 Oct 2026 against specs/vortex/VTX_TCS-1503_ECR-1_MOA_RS_I_RI_ST.pdf page 1. Scale 17.008 pt/MOA from the 1-MOA tick pitch, centre (198.425, 221.103) = the centre dot; every published callout lands except the .016 line, drawn 0.020 and recorded as published (listed in tools/build_vortex_ecr1.py). Geometry converted exactly from the outlines' own vertices, so the below-only horizontal ticks, the open centre and the extents are the drawing's own; numerals placed from glyph outlines.
Use it on your own rifle
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.