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12 gram CO2 cartridge

2006-06-18T22:34:12Z

Sharpshooter:

12 gram '''CO<sub>2</sub> cartridges''' are used primarily as a portable way to provide pressurized gas to a [[pneumatic cannon]]. They cost roughly $0.50 a peice, and are typically connected via an adapter, which can be purchased for about (I have very little clue. 10-20$?)
Once empty, they are often used as projectiles - they have a nice mass, and are quite sturdy.

Here is a chart:
<table>
<tr><td>Chamber Size (ci)</td><td>Chamber Pressure (psi)</td></tr>
<tr><td>10</td><td>420</td></tr>
<tr><td>20</td><td>210</td></tr>
<tr><td>30</td><td>140</td></tr>
<tr><td>40</td><td>105</td></tr>
<tr><td>50</td><td>84</td></tr>
<tr><td>60</td><td>70</td></tr>
<tr><td>70</td><td>60</td></tr>
<tr><td>80</td><td>53</td></tr>
<tr><td>90</td><td>47</td></tr>
<tr><td>100</td><td>42</td></tr>
</table>

To calculate the pressure for any non-given valve, use this equation, but note that the pressure can't go above the 800 psi vapor pressure og CO2.

4200/Chamber Volume In ci=Chamber Pressure in psi -OR- 4200/CV=CP
For example:
You have a chamber volume of 41.3ci.
So it can be said that 4200/41.3=CP
4200/41.3 is equal to 101.6949152542373 For simplicity's sake we will round this to 101.7
This means that CP=101.7psi
Your 41.3ci chamber will have a pressure of 101.7psi when filled with one 12g CO2 cartridge. Simple, eh?

Marble

2006-06-18T22:29:56Z

Sharpshooter:

'''Marbles''' are good solid projectiles, that can penetrate hard targets like wood and sheet metal. They are cheap easy to find and come in a range of sizes. The most common dimensions are 1/2, 5/8, 7/8 and 1 inch, or 12, 16, 22 and 25 mm. Larger marbles exist but are often too costly to be used in day to day shooting.

The manufacturing tolerances of marbles are often quite wide, so not all 16mm marbles will fit in a 16mm [[barrel]] for instance. If you go to the store to buy marbles, it is suggested to bring a piece of you [[barrel]] to test fit your ammo.

A marble hitting a hard target (such as a rock) is often crushed to harmless sand, but there are chances of getting sharp splinters and ricochets, and appropriate care should be taken. Because if their relatively consistent shape and size marbles are good projectiles to use in cannons with automatic loading mechanisms.

[[Category:Projectiles]]

Marble

2006-06-18T22:29:36Z

Sharpshooter:

'''Marbles''' are good solid projectiles, that can penetrate hard targets like wood and sheet metal. They are cheap easy to find and come in a range of sizes. The most common dimensions are 1/2, 5/8, 7/8 and 1 inch, or 12, 16, 22 and 25 mm. Larger marbles exist but are often too costly to be used in day to day shooting.

The manufacturing tolerances of marbles are often quite wide, so not all 16mm marbles will fit in a 16mm [[barrel]] for instance. If you go to the store to buy marbles, it is suggested to bring a piece of you [[barel]] to test fit your ammo.

A marble hitting a hard target (such as a rock) is often crushed to harmless sand, but there are chances of getting sharp splinters and ricochets, and appropriate care should be taken. Because if their relatively consistent shape and size marbles are good projectiles to use in cannons with automatic loading mechanisms.

[[Category:Projectiles]]

Gasoline

2006-06-18T22:27:24Z

Sharpshooter:

gasoline is used in some combustion cannons. It can be metered like propane, but instead using a syringe. Gasoline provides a powerful combustion, but will very easily flood the chamber.

GASOLINE WILL NOT DESTROY PVC