How to Choose a Hunting Rangefinder

Maximum range figures are measured against large, highly reflective targets in ideal conditions - a building, a reflective sign, a rock face on a bright clear day. A deer is the opposite of that in every respect: small, matte, brown against brown, often in shadow.

The practical rule most experienced users arrive at is to buy considerably more advertised range than the distance you actually intend to range animals at. A unit advertised at several hundred yards will typically read a deer reliably at a meaningfully shorter distance, and that gap widens in rain, fog, low light and against a cluttered background.

The physics in one sentence: gravity acts on the horizontal distance a projectile travels, not on the straight line from you to the target, so shooting steeply downhill or uphill means the effective distance is shorter than the line-of-sight reading.

An angle-compensating rangefinder contains an inclinometer, measures the angle, and returns the horizontal distance you should actually aim for.

The useful part is knowing when it matters. Realtree's testing puts a practical boundary on it: shots at 20 degrees or less show little difference in point of impact inside 40 yards. Beyond those thresholds, once distance or angle increases, the gap between line of sight and horizontal distance becomes significantly wider - which, in their words, makes an angle-compensating rangefinder nearly invaluable.

One caveat the same testing raises: the technology is accurate but not perfect, and it does not replace practicing steep-angle shots. A number on a screen is not a substitute for having taken that shot before.

This setting decides what your rangefinder reports when the laser hits more than one thing, which is most of the time in real cover.

• First target priority reports the nearest object the beam strikes. This is what you want in brush, in timber, and for archery - if a twig is between you and the deer, you want to know that something is at 18 yards, not that the hillside behind it is at 140.
• Last target or distant target priority reports the furthest object, ignoring intervening grass, fog or light brush. This is what you want in open country where the foreground is empty and you are ranging something at distance.

Better units let you switch modes. Cheaper units pick one for you, so check which one before you buy - a fixed distant-target unit is a frustrating archery tool.

Rangefinders get used at dawn and dusk. A black LCD display projected over a dark timber background at last light can be genuinely unreadable, and it is the failure that surprises people most because it works perfectly in a store.

• Black LCD: excellent in bright light, poor against dark backgrounds at dusk. Common at lower prices.
• Illuminated LCD: a backlight makes it readable in low light. A reasonable middle ground.
• Red OLED: the best low-light solution, adjustable in brightness, and the reason many hunters upgrade.

If you hunt the last twenty minutes of legal light - and most deer hunters do - this is worth spending money on before you spend it on more advertised range.

Higher-end rangefinders calculate a firing solution rather than just a distance - some returning a holdover, an adjusted range or a dial value based on a profile you enter.

Two honest limits. First, the output is only as good as the profile you enter, and entering a profile carelessly produces a confident number that is wrong. Second, none of it replaces verified data from your own equipment. Treat a ballistic solution as a starting point that you confirm on paper, not as an answer.

For archery specifically, some units are built to take bow and arrow parameters and return a true archery ranging solution rather than a generic angle-compensated number, which is a more meaningful upgrade for a bowhunter than a longer maximum range.

The honest recommendation for most deer hunters: the $150 to $250 tier. It buys angle compensation and a usable display, which are the two things that change outcomes.

A rangefinding binocular puts both instruments in one housing. The argument for it is real: one thing on your chest instead of two, and you range whatever you are already looking at without swapping instruments and re-finding the animal.

The arguments against are also real. They cost substantially more than buying a good binocular and a good rangefinder separately, they are heavier, and a failure takes out both instruments at once. They also generally cannot be handed to a hunting partner while you keep glassing.

For most hunters, separate units plus a harness with a rangefinder pocket is the better value. For a western hunter who ranges constantly at distance, the combo earns its price.

1. Range before the animal arrives. At first light, range two or three landmarks in each shooting lane and note the numbers. Then you never have to move when it matters.
2. Brace it.Against a tree, a knee, or the stand rail. Hand shake causes misreads at distance more often than the unit's capability does.
3. Aim at the densest part of the animal - the shoulder rather than the chest hair line - or at a hard object beside it.
4. Use scan mode on difficult targets. Sweeping across the animal often finds a readable spot when a single press does not.
5. Keep it on a tether. A rangefinder dropped from a stand is an expensive and avoidable loss.
6. Know its real limit, not the box limit. Range animals and objects at varied distances before the season so you know where yours stops working.

• Ignore the maximum range figure. Buy well above the distance you intend to range.
• Angle compensation matters from elevated stands and in steep terrain. Below 20 degrees and inside 40 yards, the difference is small.
• First target priority for archery and brush; distant target for open country.
• An illuminated or red display is worth more than extra range for a deer hunter.
• The $150 to $250 tier is the value sweet spot for most hunters.
• Ballistic solutions are a starting point, not a substitute for verified data.
• Range landmarks before the animal arrives, and keep it on a tether.

Model picks are in our rangefinder roundup. Related: binoculars under $500, bino harnesses, and the bow season checklist.