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....
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Field Notes
Product guides, equipment care and buyer education from the D&R team.
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...
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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.
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What Is Parallax on a Rifle Scope, and How to Adjust It
If your reticle seems to float over the target when you move your head, that's parallax. Here's what it is and how to dial...
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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.
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Understanding Lens Coatings and Optical Glass
Two scopes with the same magnification can look completely different. The reason is usually the glass and its coatings. Here's what to look for.
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Fixed vs Variable Magnification Scopes
A variable scope does more, but a fixed-power optic does less and does it simply. Here's when each is the smarter choice.
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