The numbers
- Manufacturer
- ZeroTech
- Reticle
- PHR 4
- Focal plane
- second focal plane
- Units
- MOA
- Magnification
- 1–8×
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 · ZeroTech
ZeroTech PHR 4
Drawn to scale from ZeroTech’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 ZeroTech Optics’s published specification.
Scopes with this reticle
- Thrive HD 1-8x24 LPVO
- Thrive 1-10x24 LPVO
- Vengeance 4-16x40
- Vengeance 3-12x40
Other ZeroTech reticles
Subtensions
Official: A=5 floating centre width, B=0.5 centre dot, C=1.1 floating-cross gap, D=5 left inner, E=12.5 right inner to post, F=0.5 left post thickness, G=2.0 right post thickness, H=0.4 fine-line/dot stem. Sheet titled Thrive HD 1-8x24; index also lists illuminated LPVO hosts. Spec does not state illumination colour or which elements glow — record marked illuminated from product names, elements unmarked.
How this one was checked
Rebuilt and verified 11 Sep 2026 from ZeroTech's PHR 4 spec sheet at 400 dpi, 38.0 px/MOA. Scale anchored twice and the two agree: A=5 is the span of the inner fine stadia, measured +/-2.58, and D=5 is centre to the post inner edge, measured 5.0. C=1.1 clear radius at centre, measured 1.05. MEASURED and easy to assume wrong: there is NO post above centre — the upper arm is the short fine stadia and then nothing; posts run left, right and down only. Thicknesses from the table (F=.5 fine, G=2.0 post, B=.5 dot); the drawn post measures 1.47 against a published 2.0, the same schematic tolerance found on the RAR. E=12.5 could not be tied to measured geometry and is not represented. NOTE the sheet is headed 'Thrive HD 1-8x24' while this record lists four hosts; the other three are carried from ZeroTech's own reticle index.
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 ZeroTech.