The numbers
- Manufacturer
- ZeroTech
- Reticle
- PHR II
- Focal plane
- second focal plane
- Units
- MOA
- Magnification
- 4–20×
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 II
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
- Vengeance 4-20x50
- Vengeance 4-20x50 PHR II Illuminated
Other ZeroTech reticles
Subtensions
Official phrii-specs.pdf. Same holds as PHR plus floating centre dot (B=0.16). Fixed: A=5 C=1.1 D=5 E=10 F=15 G=20 H=25 I=5 J=7.5 K=12 P=10 Q=3.5. 4-20 column L=0.65 M=0.18 N=0.18 O=0.18. AU product page states SFP calibrated at 20x. Illuminated hosts exist; spec does not mark glow regions. 2.5-15 and 6-24 columns differ on L/M/O — use those columns for Thrive HD 2.5-15 / 6-24.
How this one was checked
Rebuilt and verified 11 Sep 2026 from ZeroTech's PHR II spec sheet at 400 dpi. Scale 41.3 px/MOA from the four tree bars, with the fit's intercept landing on the crosshair row to within a quarter of a MOA rather than needing an offset. MEASURED: bar depths 10.23, 15.45, 20.31 and 25.23 MOA against the table's P/F/G/H = 10/15/20/25; bar widths 3.66, 5.62, 7.70 and 12.08 against Q/I/J/K = 3.5/5/7.5/12; heavy sections start at +/-5.06 on every arm (A=5); fine inner stadia run 0.7 to 3.25 from centre inside a C=1.1 clear centre. The horizontal carries NO hold marks — checked at 2.5, 5, 7.5, 10, 12.5, 15 and 20 MOA with a loosened threshold and every one returns bare line height. The lower arm is a fine line the tree hangs from, not a post; the post is on the other three arms. Per the rule established on the RAR, this is a ZeroTech schematic: positions are measured, thicknesses come from the table. The second bar's width draws 12% wide, which is drawing tolerance, so all four widths are taken from the table. This record is the Vengeance 4-20x50 column: L=0.65, M/N/O=0.18.
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.