The bear appeared in a small opening on the brushy hillside across the valley. I got a range of 472 yards, looked down to check the dope card taped to my rifle stock, dialed my turret and began to settle in for the shot. “Wait, did I look at the right line?” I thought to myself. This was day five, the first bear we’d seen, and my last day on the mountain. Not wanting to blow the opportunity by dialing the wrong correction on my elevation turret, I looked down to confirm. It was indeed what I first recalled from the visually-crowded, spreadsheet-like data card. The problem now – the precious seconds wasted allowed the bear to move back into thick cover and out of my life.

By taking extra time to not screw up my one and only opportunity, I screwed up my one and only opportunity.

Now, imagine a handheld rangefinder that gives an accurate range along with customized elevation and windage corrections cleanly displayed in the field of view. Corrections that account for real-time atmospherics, wind speed, and wind direction.

Well, you don’t have to imagine, because this incredible capability is reality – and available in the Vortex® Razor® HD 4000 GB.

What’s in a name?

The Razor® designation denotes it’s Vortex’s highest level of quality and performance, 4000 indicates the max reflective target ranging capability, and the GB component of its nomenclature stands for GeoBallistics®.

Every Razor® HD 4000 GB is equipped with an on-board GeoBallistics® Solver and comes with a subscription to the Pro version of the GeoBallistics® app. A notable feature of the app, its comprehensive, continually updated, bullet library.

Features and Setup:

The rangefinder connects to the app via Bluetooth®. Three preloaded ballistic profiles (.308, 6.5 Creedmoor, and 5.56.) will get folks running those cartridges started, but the real magic happens when you use the app to enter and transfer customized data (bullet weight, ballistic coefficient, zero distance, optic height over bore, etc.), for the specific load you are pushing through your rifle to the rangefinder. If your bullet is in the bullet library – which it likely is – pertinent attributes will autofill their respective cell in the app. Very handy, and a timesaver compared to manually looking the information up.

One input of particular importance, an accurately measured muzzle velocity using a reliable chronograph. No access to a chronograph – no problem. Start with the box-posted velocity, shoot a group at a distance you anticipate significant drop while maintaining high confidence in your equipment and ability, measure how high or low your impacts are compared to what the unit is telling you, and adjust your velocity up or down accordingly.

The Razor® GB’s on-board environmental sensors measure temperature, humidity, and pressure at your shooting location for increased precision of the ballistic solution when not connected to the app. When connected to the app, you have the option to pull weather data from local weather stations. Two wind modes (Full Crosswind and patented Wind Bearing Capture mode) accurately calculate wind holds for the manually entered wind speed. Unit also pairs with Kestrel® wind meters when connected to the app. Once set, the unit can operate independent of your phone. Setup is straightforward and intuitive – incredibly refreshing for a device with this much tech. The One that Didn’t Get Away: Since we opened with a sob story of the one that got away, let’s end with one that didn’t. Using the Razor® 4000 GB on a frigid November deer hunt was a dream this fall. It’s super-fast and the precision of the corrections it spits out is nothing short of impressive.

On the fringe of mule deer habitat, we encountered a nice whitetail buck bedded with doe he was obviously locked on for the foreseeable future. Our approach due to terrain and wind direction dictated we get to a spot where we could see the doe, but not the buck bedded below her over the crest of the hill. Banking he would eventually join her, we settled in. Four toe-numbing hours later he got up and walked our way. A final range of 278 yards, a quick dial, and a single shot led to a late-night dinner of buck tenderloins.

The Razor® 4000 GB is the exact handheld laser rangefinder I’ve been looking for to round out my rifle kit on open-landscape hunts. It will be with me from now on. I firmly believe any hunter looking to maximize their effective range will feel the same.

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