Range Report Ballistic 'Whiz Wheel' solver

BryanLitz

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I'd like to make everyone aware of a new ballistic solver called the 'Whiz Wheel':
http://www.accuracy1stdg.com/
whizWheel2.png



The Whiz Wheel is a non-electronic device that calculates ballistic solutions out to transonic range for any small arms bullet.

Features include:
*Density altitude calculator
*Meters/MILS or Yards/MOA output
*Trajectory prediction within 0.1 MIL or 0.25 MOA resolution
*Wind deflection for any speed and direction
*Spin drift
*Leads for engaging moving targets
*Corrections for inclined shooting
*Ability to 'true' the solution for variations in MV or BC

The tan colored sleeve is general, meaning it works with all wheels. The wheels are interchangeable laser engraved plastic that are custom made for your specific bullet, MV, sight height, and twist rate. Each wheel provides a full solution for a single round. Different wheels are required for each new round.

Solving the wheel is very simple. Start by solving the density altitude (DA) with the small wheel, or getting it from a Kestrel. Then line up the DA with the range, and the wheel outputs drop. The drop can be corrected for incline via the table on the back of the sleeve. The back of the whiz wheel also calculates the lateral solution elements including wind, spin drift, and moving target leads.

I was heavily involved in the development of this wheel and can vouch for the accuracy of the solutions which are generated with a point mass solver and measured G7 BC's. Furthermore I'll be available to answer questions about the whiz wheel on this thread.

Contact for ordering the Ballistic Whiz Wheel can be found in the above linked website.

-Bryan
 
Re: Ballistic 'Whiz Wheel' solver

That is really cool!

From the website they appear to be very reasonably priced, too.

I will definitely order one.
 
Re: Ballistic 'Whiz Wheel' solver

I would also like to know what the custom wheel gives you...

Is it just the projectile type, sight height, muzzle velocity and Mils/MOA that are adjusted in a custom load?
 
Re: Ballistic 'Whiz Wheel' solver

That looks very nice. I like the DA cards that are being made by a couple of Hide members but they are limited in caliber, bullets and velocity. I have made some DA cards of my own but this is a nice accumulation of data in one easy product. I wonder how accurate the solutions are and would like to see the wheels available vs custom wheels. The site is not complete in that regard.
 
Re: Ballistic 'Whiz Wheel' solver

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 427Cobra</div><div class="ubbcode-body">What do the custom wheels get you </div></div>

The custom wheels are ones that you specify the bullet (BC), MV, barrel twist, sight height, and yards/MOA or meters/MILS.

The standard wheels will be for standardized configurations like M110 with M118LR, etc.

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Anyone care to explain what defines Low DA, High DA, Mid range and Short range.</div></div>

The range breakdown depends on the specific ballistics of the round. Typically, short range is from 200-500 (yards/meters), mid range is from 500-750, and long range is from 750 to transonic.
For short and mid range, the entire range of DA is represented in the same window. However for the long range output, the DA window is split into low DA (-10kft to +5kft) and high DA (+5kft to +20kft).

The reason why it's done that way is to achieve the 0.1 MIL/0.25 MOA resolution on the output.

All of the wind, spin drift, and mover output on the back is solved with a single window for all range and DA.

-Bryan
 
Re: Ballistic 'Whiz Wheel' solver

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ggmanning</div><div class="ubbcode-body">I wonder how accurate the solutions are and would like to see the wheels available vs custom wheels. The site is not complete in that regard. </div></div>

The solutions are run with a point mass solver using my measured G7 BC's for the bullets. Given the same inputs, the whiz wheel will generate the same outputs as JBM, my Point Mass Solver, and any other properly written ballistics program. The accuracy of the solution will be as accurate as the supplied inputs.

The website is still under development with only the basic functionality currently online. As time goes by you'll see more information and details about what the standard wheels are.

-Bryan
 
Re: Ballistic 'Whiz Wheel' solver

Bryan that sounds good as all my tables are generated from your data anyway. Looks like a specific custom wheel for each of my long guns would be in order. All the data in one place like this would be very nice.