How the Whiz Wheel Works
In the lower right corner of the device is a little wheel that you rotate to your elevation above sea level and outside air temperature, which gives you your density altitude. Once you know that value, you dial in your range to that DA and the solver gives you the firing solution in MOA or MILs, depending upon what wheel you are using.
There are three windows—200-350 yards, 350-700 yards, 650-1100 (low DA range) yards and 650-1100 (high DA range) yards. When you rotate the wheel, the line tells you the required clicks for your turret (or Mil-dot reticle holdovers). On the backside are wind corrections for your shot range and Inclination Angle Correction.
Also unique to the Whiz Wheel is the ability to true your shots. Each window presents a “Nom MV” or Nominal Muzzle Velocity solution, but also a -50fps and +50fps adjusted solution on either side.
The Whiz Wheel at the Range
Getting back to Hodnett’s practical experience-based way of thinking about shooting, there are several ways you can “true” the Whiz Wheel solver to your actual hits.
Let’s say everything you input into the wheel is accurate but your shots are still landing low. It might be that your lot of ammo is just slower than previous lots. You can find the proper MOA or MIL value, and note the corresponding difference in Density Altitude. You then simply apply that correction to all figures going forward.
I learned the Whiz Wheel could be used to determine correct range based on actual bullet impact. After ranging the target at what I thought was 500 yards and determining a firing solution on the Whiz Wheel, my shots landed low. I adjusted the Wheel to the correct turret clicks needed to impact dead center and noted the range — 550 yards (which I double-checked and confirmed was indeed the actual range).
So by working backwards the Whiz Wheel was able to double check and correct my range estimation. “The bullet doesn’t lie,” says Hodnett, and that is the truth.
I also tried setting the target at some unknown distance in between 550 and 300 yards, ranged the target (it turned out to be 425 yards), adjusted the DA (the temperature had risen more than ten degrees as the afternoon sun baked down) and found the new firing solution.
Five shots landed dead nuts. I will note that I am shooting a Leupold Mark 4 M3 scope with 1 MOA elevation turret. So actually the Whiz Wheel has the ability to discriminate to much finer resolution than my 1 MOA elevation turret is capable of dialing.
To correct for this, I have worked out the MIL-MOA conversion for fractions of 1 MOA to use the scope’s Mil-based TMR reticle for fine holdover adjustments in MILs.
For less than the cost of a couple boxes of match grade ammo, the Whiz Wheel opens up long-range firing solutions out to 1100 yards no matter what the outside conditions. It is small enough to fit into a pocket, and doesn’t require batteries. It is about the same size as the ever-popular Mil-Dot Master, and the perfect companion to it. Now standard issue for Special Forces snipers, it is based on Hodnett’s rallying cry that the “The bullet doesn’t lie.” The best marksmen in the world use this device. And now you can too.
The Whiz Wheel retails for $49.95 and can be ordered online from Accuracy1stdg.com.
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About the Author: Corey Graff is the online editor for gundigest.com. His personal interest in firearms includes handguns for hunting and self-defense as well as guns from the World War II era.
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