The numbers
- Manufacturer
- Vortex
- Reticle
- EBR-556B 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
Vortex EBR-556B 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
- Spitfire 3x
Other Vortex reticles
Subtensions
Fixed-power prism ('Subtensions are measured in MOA'); focal plane is moot, recorded FFP so nothing rescales. The whole reticle is illuminated (drawn red). Published: the aiming point is the top bar; BDC hashes 4.4 / 8 / 12.5 below it; post from 35, 1.5 thick; line .5; broken ring 18.85 across its INSIDE edge, .5 thick. Drawn, not published (the sheet is to scale): top bar 7.6 wide, hashes 5.0 / 4.0 / 3.0 wide, all .5 thick; the line runs on 3.8 above the top bar; ring centred on the top bar, three arcs -35 to 30, 45 to 135 and 150 to 215 degrees. Post drawn to 41.5 MOA (the sheet's frame is 39.7).
How this one was checked
Verified 8 Oct 2026 against specs/vortex/VTX_SPR-1303_EBR-556B_MOA_RD_I_RI_ST.pdf page 1. Scale 4.5355 pt/MOA fitted to the three hash positions and the post start, centre (198.0, 212.6) = the top bar; all eight published callouts then land (listed in tools/build_vortex_spitfire.py). Line, hashes and post converted exactly from the single outline's vertices; ring from its vertex radii and cut angles.
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.