Tactical Military Arms

The Leatherwood ART M1000 Automatic Ranging and Trajectory Scope, Part 2

Sighting in the ART M1000 scope. To estimate a 250-yard zero on a 100-yard range, use the hash mark directly above the center crosshair on the reticle. The trajectory algorithm of this scope is based on a 250-yard zero.

Sighting in the ART M1000 scope. To estimate a 250-yard zero on a 100-yard range, use the hash mark directly above the center crosshair on the reticle. The trajectory algorithm of this scope is based on a 250-yard zero.

Sighting in the ART M1000

Remember that this scope was developed in conjunction with the military during the Vietnam War to provide Army snipers with a fast way to range and shoot targets. Essentially, the power ring—which goes from 2.5X – 10X—is married to the base via a cam.

This “no math” method of ranging targets makes sense in the heat of battle. You simply insert a target of known dimensions (18-inches or 1-meter) into a bracket on the reticle by turning the power ring.

Let’s say you’re mule deer hunting, and have a buck at long range but the distance is unknown. Looking through the reticle, you turn the power ring until the approximate 18-inch chest of that deer fills half the bracket inside the reticle. You can now do two things: Swing the crosshair over to the buck’s chest and shoot, or peek at the power ring to learn the distance (most critical for wind correction).

That means that when the target is at 250 yards or closer, you’ll be on 2.5 power. When the target is 500 yards, you’ll be on 5 power, 700 yards 7X, 800 yards 8X and 1000 yards 10x.

The first shot with the scope landed about six inches right and low. The ¼ MOA clicks on the turret were spot on and quickly brought the subsequent shots into the black. Note that the M1000 scope is designed to be zeroed at 250 yards. Not having that much real estate at the range I was using, the instructions suggest using the top hash mark above the crosshair for a 100-yard sight-in, which should put me on at 250.

If I could change one thing about the scope I’d go with thinner crosshairs. At 100 yards shooting on 2.5 power the width of a crosshair is about 1 MOA. I was able to shoot a 1.75 MOA group at that range, which is about as good as I could do with thick wires.

It should be noted that the scope can be shot in “manual mode” where you unlock the power ring from the cam. In this mode you could shoot with the scope on 10X, which would help with precision. The downside is that you lose the autoranging capability, which is sort of the point of this scope.

Having gotten the Leatherwood ART M1000 scope sighted in and on paper, we’ll next head out to the 600 yard range and try to hit stuff at ranges unknown.

Leatherwood ART M-1000 ScopeWant to get your hands on an ART-1000 scope? Click here to buy at GunDigestStore.com!

Retail: $459.00
Your price: $391.00
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All the shooter has to do is place the reticle on the target, zoom in to FRAME an area of known size (i.e. the 18_ height of a buck’s chest cavity), AIM, and squeeze the trigger to SHOOT. It all takes less than 5 seconds, and the shooter’s eye never leaves the scope! When the shooter frames an 18_ or 1 meter target using the brackets on the reticle, the scope will automatically range the target and compensate for bullet trajectory for distances of 250 to 1,000 meters. Buy Now

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