First Focal Plane vs. Second Focal Plane with Ryan Cleckner: Which Scope is Right for You?

Ryan Cleckner from Gun University provides an expert breakdown of First Focal Plane (FFP) versus Second Focal Plane (SFP) rifle scopes. He explains that FFP scopes magnify the reticle and target image proportionally, making reticle measurements accurate at all magnifications, ideal for precision shooting. SFP scopes, where the reticle size is constant, are often preferred for hunting and low-light conditions due to reticle visibility at lower powers, and are generally less expensive.

Quick Summary

First Focal Plane (FFP) scopes magnify the reticle and target image proportionally, ensuring reticle measurements are accurate at all magnifications, ideal for precision shooting. Second Focal Plane (SFP) scopes have a constant-sized reticle, making them visible at lower powers for hunting but limiting the accuracy of reticle measurements to specific magnifications.

Chapters

  1. 00:00Introduction to Focal Planes
  2. 00:20Defining FFP & SFP
  3. 00:49Second Focal Plane (SFP) Explanation
  4. 01:09First Focal Plane (FFP) Explanation
  5. 01:35FFP Advantage: Reticle Accuracy
  6. 02:24SFP Benefits: Cost and Hunting
  7. 03:19Choosing the Right Scope

Frequently Asked Questions

What is the main difference between First Focal Plane (FFP) and Second Focal Plane (SFP) rifle scopes?

The primary difference lies in how the reticle scales with magnification. In FFP scopes, both the reticle and target image magnify together, keeping reticle measurements accurate at all power settings. In SFP scopes, the reticle size remains constant while the target image magnifies, meaning reticle measurements are only accurate at a specific magnification.

When is a Second Focal Plane (SFP) scope preferred over a First Focal Plane (FFP) scope?

SFP scopes are often preferred for hunting or low-light situations where lower magnifications are common. The reticle in an SFP scope remains consistently visible, whereas a tiny FFP reticle can be hard to see when zoomed out in dim conditions. SFP scopes are also generally less expensive.

Why are First Focal Plane (FFP) scopes better for precision shooting?

FFP scopes are ideal for precision shooting because their reticle subtensions (like mil-dots) remain accurate at any magnification. This allows shooters to reliably use the reticle for range estimation, windage adjustments, and elevation holds without needing to account for magnification changes.

Can I use mil-dots on an SFP scope for rangefinding at any magnification?

No, with Second Focal Plane (SFP) scopes, mil-dot measurements are only accurate at a specific magnification, typically the highest power setting. Using them at other magnifications will result in inaccurate range estimations and holdovers.

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