I've come up with an equation that measures the efficiency of shot distance versus the work you put into achieving that distance, and work to the ideal perfect world values. The concept is that the closer your gun is to a perfection point, the more efficient it should be.

**For all purposes, this measures an individual firing mechanism for both air and spring models. If you're using an integrated gun, you MUST compute the two sections separately.**PLEASE check the prenotes directly below. They contain two rules you must follow when using this formula. If you enter something that's not making sense, make sure your numbers are entered right with these areas:

Pre-notes:

Pumps >= 1

Range >= 1

*120 Range is expected as the defacto perfect range or expected range for that particular gun. This can be changed to the ideal "perfect range" that the gun of that class can get under the highest conditions possible. I suggest moving it around if you want!

**Equation:**( Range / 120) / ( Pumps x Pounds of Force Required / 100 + 1 )

**Proving the Extremes:**Here's a scenario:

A gun with 120/120 perfect range with 1 pump required with no pounds of force has an efficiency of 1.00 (impossible to achieve)

A gun with 1/120 range with 100 pumps required with 20 pounds of force has an efficiency of 0.03%

**Realistic Examples**

A big blast with 110 range, 4 pumps with 3 lbs force has an efficiency of 0.818452381, or 81%

Equation: ( 110 / 120) / ( 4 x 3 / 100 + 1)

**The guts behind the math**The formula relies on the ration of the "perfect range" to the ratio of the "perfect loading". /100 is required at the end to rationalize the answers into the same base as the top of the fraction. The +1 prevents the user from entering something dumb and breaking the formula.

It's possible to achieve values larger than 1.00 Perfect Efficiency by inputting a range larger than the expected range set.

**Technicalities**This is a work in progress, and I take no responsibility of you use it in a dumb fashion. If you sell your guns using this scale, that's your own business. Also, please feel free to improve on the equation if you see something that could change to make it work better. That's why I stumbled here and wrote this in the first place! (Thanks GunnedDown for the concept!) Please attribute me if you use my equation elsewhere for something. Call it the "Silver Scale" or something catchy if you'd like. This means don't go stealing things other people do. It's bad taste.

Alright, hit me with thoughts and suggestions!

**Edited by Silivrenion, 03 August 2009 - 02:35 AM.**