Field Notes

Premium riflescope on a dark steel workbench
How to Choose a Rifle Scope: A Practical Buyer's Guide
Magnification, objective size, focal plane and reticle are the four decisions that matter most. Here is how to match a scope to the way you actually shoot. Read more...
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...
A reflex red dot sight beside a holographic sight on dark slate
Red Dot vs Holographic Sight: How to Choose
Both are fast, both are parallax-friendly, but they create the reticle in completely different ways — and that drives battery life, reticle choice and how the dot looks to your... Read more...
A low-power variable optic riflescope with illuminated magnification ring
The LPVO Buyer's Guide: 1-6x, 1-8x and 1-10x Explained
A low-power variable gives you red-dot speed at 1x and magnified precision up top. Here's how to choose between 1-6x, 1-8x and 1-10x and why true 1x matters. Read more...
A pistol red dot optic with mounting adapter plates and screws
Pistol Red Dots and Optic Footprints, Explained
The hardest part of a pistol optic isn't the optic — it's making the footprint, slide cut and plate all agree. Here's how the common footprints line up. Read more...
A flip-to-side magnifier and a red dot sight on a rail section
Do You Need a Magnifier for Your Red Dot?
A magnifier turns a fast red dot into a mid-range optic on demand. Here's when it's the right call, and when an LPVO is the smarter buy. Read more...
A spotting scope on a tripod on a ridge at dawn
How to Choose Your First Spotting Scope
Magnification, objective size and tripod pairing decide how useful a spotting scope really is. Here's how to get all three right the first time. Read more...
Scope rings, mounting bases and a torque wrench on a workbench
Scope Mounting Guide: Rings, Bases, Height and Torque
A great scope on a poor mount will never hold zero. Here's how to choose rings, set the right height, level the reticle and torque it correctly. Read more...
A fixed-power prism combat optic beside a variable riflescope
ACOG vs LPVO: Choosing a Close-to-Mid-Range Combat Optic
A fixed-power ACOG and a variable LPVO solve the same problem two different ways. Here's how battery-free durability stacks up against true 1x versatility. Read more...
A riflescope in a bench vise beside a paper target with a tight group
How to Zero a Rifle Scope: A Simple Step-by-Step
Boresight, pick a distance, fire a group, adjust off the center of that group, confirm. Here is the whole process without the guesswork. Read more...
A pistol red dot optic with a small torque driver and hex bits
How to Mount and Zero a Pistol Red Dot
Get the footprint and torque right, co-witness your irons, then zero at a realistic distance. Here's the clean way to set up a pistol dot. Read more...
Two miniature reflex pistol optics side by side on dark slate
Trijicon RMR vs SRO: Which Pistol Optic Is Right for You?
Same footprint, two philosophies: the RMR is the rugged duty and carry standard; the SRO trades some ruggedness for a big, fast window. Here's how to pick. Read more...
Three compact pistol red dot optics arranged in a row
Holosun 507C vs 508T vs EPS Carry: Which Dot?
Three of Holosun's most popular pistol dots, three different jobs: value open reflex, premium titanium, and a sealed enclosed emitter for carry. Read more...
Three flip-to-side optic magnifiers arranged in a row
EOTech G33 vs G43 vs G45: Which Magnifier?
Two 3x options and a 5x, all flip-to-side. The choice comes down to how far you want to reach and how you like to mount it. Read more...
A tactical weapon light casting a warm beam through the dark
How to Choose a Weapon Light: Lumens, Candela and Runtime
Lumens, candela and runtime measure three different things. Understand them and the right light for a pistol, carbine or pocket gets obvious. Read more...
A precision rifle bipod deployed on rocky ground at dawn
Rifle Bipods 101: Choosing the Right Shooting Support
Attachment, height, and whether you need cant and pan are the decisions that matter. Here's how to choose a bipod that actually helps your groups. Read more...
Two reflex sights, one with a green reticle and one with a red reticle
Green Dot vs Red Dot Sights: Which Reticle Color?
The color of your dot changes how it looks in bright light and to your eyes. Here's when a green dot is worth it — and when red still wins. 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...
A microfiber cloth, lens pen and binoculars, an optics care kit
Caring for Your Optics: Cleaning and Off-Season Storage
Good glass lasts decades if you treat it right. Here's how to clean lenses without scratching them and store optics through the off-season. Read more...
A pair of premium binoculars on a rock at dawn
How to Choose Binoculars for Hunting and the Outdoors
8x or 10x? 42mm or 50mm? Here's what the numbers mean and how to match a pair of binoculars to how and where you actually glass. Read more...
A compact handheld laser rangefinder on dark slate
How to Choose a Laser Rangefinder
The headline 'max range' is the least useful number on the box. Here's what actually determines whether a rangefinder ranges what you point it at. Read more...
A slim hunting riflescope beside a larger tactical riflescope
Leupold VX vs Mark Series: Hunting vs Tactical
Leupold's two main scope families solve different problems. Here's how the VX hunting line and the Mark tactical line actually differ. Read more...
A red dot, an LPVO scope and a magnifier arranged together
The Best Optic for an AR-15: Dot, LPVO or Magnifier?
There's no single best AR-15 optic — there's the right one for your distances. Here's how red dots, LPVOs and magnifiers stack up. Read more...
A red dot sight co-witnessed with flip-up iron sights on a rail
Co-Witnessing Iron Sights with a Red Dot
Absolute or lower 1/3 co-witness? It comes down to mount height and how much clean window you want. Here's the difference. Read more...
Close-up of a riflescope side parallax adjustment knob
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 it out. Read more...
An enclosed-emitter and an open-emitter pistol red dot side by side
Enclosed vs Open Emitter Red Dots: Which Is Better?
Open emitters are lighter and smaller; enclosed emitters are sealed against the stuff that blocks a dot. Here's how to choose. Read more...
A slim hunting riflescope on a weathered log at dawn
How to Choose a Hunting Riflescope
A hunting scope has a different job than a target scope. Here's how to pick magnification, reticle and glass for the game you actually chase. 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...
A glassing kit with binoculars, tripod and spotting scope
Building a Glassing Kit for Western Hunts
Western hunting is won behind glass, not behind the trigger. Here's the kit that lets you find and judge animals from a distance. Read more...
Several compact reflex red dot sights arranged in a row
SIG Sauer ROMEO Red Dot Lineup Explained
SIG's ROMEO family spans pistol micros to tube-style rifle dots. Here's how the lineup breaks down so you can match one to your gun. Read more...
Two holographic weapon sights side by side, full-size and compact
EOTech EXPS vs XPS: Which Holographic Sight?
Same holographic reticle, two different bodies. The EXPS is built to run a magnifier; the XPS is the lighter, lower-profile choice. Here's the split. Read more...
Three riflescopes of increasing size arranged in a row
Athlon Ares vs Midas vs Cronus: Which Line?
Athlon stacks its riflescopes in clear tiers. Here's how Midas, Ares and Cronus differ in glass and price so you buy the right level. Read more...
A prism scope, a red dot and an LPVO arranged together
Prism Scope vs Red Dot vs LPVO: How to Choose
A prism scope sits between a red dot and an LPVO. Here's what it does better, what it gives up, and who should choose each. Read more...
Macro of a coated optical lens showing anti-reflective coatings
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. Read more...
A set of scope rings of different heights with a torque driver
How to Choose Scope Rings: Height and Diameter
Rings look simple, but the wrong diameter or height ruins an otherwise great scope. Here's how to get both right. Read more...
A precision rifle scope with tall exposed turrets
Your First Precision Rifle Scope for PRS
Getting into precision rifle? These are the features that actually matter in a first scope — and the ones that are just marketing. Read more...
A red dot sight on a rail in a dim low-light scene
The Best Home-Defense Optic Setup
Under stress you want simple and reliable. Here's the optic-and-light setup that makes a home-defense gun easy to run in the dark. Read more...
A fixed-power scope beside a variable-power scope
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. Read more...
A compact weapon light beside a small aiming laser unit
Weapon Light vs Laser: Which Do You Need?
A light and a laser do completely different jobs. Here's what each is for, and why serious setups often run both. Read more...
From the Journal

Field Notes

Product guides, equipment care and buyer education from the D&R team.

Buyer's Guides

Red Dot vs Holographic Sight: How to Choose

Both are fast, both are parallax-friendly, but they create the reticle in completely different ways — and that drives battery life, reticle choice and...

Read Article

Buyer's Guides

How to Choose Your First Spotting Scope

Magnification, objective size and tripod pairing decide how useful a spotting scope really is. Here's how to get all three right the first time.

Read Article

How-To Guides

How to Mount and Zero a Pistol Red Dot

Get the footprint and torque right, co-witness your irons, then zero at a realistic distance. Here's the clean way to set up a pistol...

Read Article
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