Field Notes

Close-up of a riflescope elevation turret and click markings
MOA vs MIL: Which Rifle Scope Turret Is Right for You?
Both measure angles, both work, and neither is 'more accurate'. The real rule is simpler: keep your reticle and turrets in the same unit. Here's why. Read more...
View through a riflescope eyepiece showing a fine crosshair reticle
First Focal Plane vs Second Focal Plane (FFP vs SFP)
In an FFP scope the reticle grows and shrinks with magnification; in an SFP scope it stays the same size. That one difference changes how you hold and dial. Read more...
Macro of magnification and objective numbers engraved on a riflescope
How to Read Riflescope Numbers (Like 3-9x40)
3-9x40 isn't code once you know the pattern. Here's what every number on a scope actually tells you before you buy. Read more...
View through a scope showing a mil-dot and holdover tree reticle
Understanding Reticles: Duplex, BDC, Mil-Dot and Trees
Duplex, BDC, mil-dot, Christmas tree — the aiming pattern inside your scope should match how you shoot. Here's what each one does. Read more...
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