Your Browser is OutdatedQ&A for Leupold VX-3HD 1.5-5x20mm Rifle Scope, 30 mm Tube, Second Focal Plane (SFP) — 6 Questions & 2 Answers
Your scope ring height typically depends on the rifle it is being mounted to and the barrel profile. Since this an LPVO however, low height rings should work when mounted to most bolt guns.
There are two types of focal plane scopes. There is first focal plane (FFP) and second focal plane (SFP). In a FFP scope the reticle is mounted in the scope past the magnification lens. In a FFP scope the reticle will increase in size as the magnification increases and then shrink in size as magnification decreases. In a SFP scope the reticle is mounted before the magnification lens so the the reticle will stay the same size no matter what magnification you are using. In an FFP scope the reticle holdover marks are accurate at all magnification levels. In an SFP scope the reticle holdover marks are only accurate at the highest magnification level.