Paintball Barrel Porting
Jun26

Paintball Barrel Porting

Our customers often come to us with technical questions, and barrel porting is a big one. What does barrel porting do? Barrel porting does several things, but its base function is to vent excess air from the barrel as a paintball is fired. As with all moving objects, paintballs displace air as they are accelerated into motion. Because of this the paintball must push the static air in the barrel out of the way as it moves down the bore. Without porting, all of the static air would exit the end of the barrel exactly as the paintball itself would. You can experiment with this by removing the front of a two piece barrel and using the un-ported back. By having no porting you will notice a very loud sound signature and a very heavy direct puff of air – Make sure you are pointing the barrel away from yourself and anyone else when testing this. What porting does is to vent that static air in an effort do preform several actions: 1- Quiet the sound signature of the paintball gun – By dissipating some of the air out of the porting the sound signature is reduced, making the gun quieter. 2- Reduce turbulent or compressed static air pressure – By porting the barrel we reduce the “back pressure” that exists in the barrel.  Reducing this back pressure is important because paintballs are much softer than many other projectiles and their surface deforms as the ball is accelerated. You can think of the paintball like a tiny water ballon, as you rapidly accelerate the ball air pressure on the front of the ball will “cup” the face of the ball which can cause the ball to catch turbulent air upon exiting the barrel. This can be seen often with older or poorly stored paintballs. Because the balls are softer a player can observe them flying straight then suddenly taking a sudden hook in an unpredictable fashion. This happens because the ball’s surface has caught air, and acted upon the ball pushing it away from a straight path. 3- Manage efficiency – Barrel porting also effects the air behind the paintball, more porting allows air behind the ball to escape more quickly and  can reduce the air’s ability to propel the paintball reducing efficiency. This is why most barrels have a 6inch to 8inch “control bore” which is the solid part of the barrel toward the paintball gun. This area acts as the acceleration zone for the paintball making sure all the air that the paintball gun puts out is put to good use before it is allowed to escape...

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CO2 versus Compressed Air
Jun25

CO2 versus Compressed Air

48ci/3000psi Compressed Air Tank We get a lot of questions and one of the most common is “What is the difference between CO2 and Nitrogen?” or “What is the difference between Co2 and Compressed Air?” To start, lets look at the terms and how they relate to paintball. Nitrogen – You will often hear players that have been around paintball for awhile refer to compressed air bottles as “nitrogen” bottles. The reason for this is simple, back in the early days of paintball it was difficult to find bulk compressed air bottles or compressors that could reach the 3000psi or 4500psi mark used in paintball. So paintball players would purchase larger bulk nitrogen bottles from welding supply stores to fill their paintball tanks. Welders use nitrogen to pressurize tubes or other sealed vessels to expel other gasses that might contaminate their welds. This is one of the reasons nitrogen is such a good source of propellent for paintball, it is very stable and clean. Nitrogen does not react to temperature changes the way some gases do, and remains very stable even in high temperatures. Compressed Air – With the growth in compressor technology and the popularity of paintball, high pressure compressors and bulk compressed air bottles are very easy to find today. So one might ask “Isn’t nitrogen better?”, well the answer is a fairly simple “nope”. The air we breath, and the air we compress into our paintball tanks today is composed of 70% nitrogen and is nearly as stabile as pure nitrogen, at least when used in the application of propelling a paintball. CO2 –  Is a carbon based gas, and when compressed it becomes a liquid, which is how it is used in paintball. We use bulk tanks to put liquid Co2 into our bottles, this is why CO2 tanks are rated by ounces rather than cubic inches (ci) when measuring capacity. When CO2 is expanded back into a gas (like we use in paintball) it has a cooling effect and will chill the bottle, gun and anything else that comes into contact with the gas. When expanded rapidly Co2 will convert into its solid form, known as dry ice, an issue we will address later. Furthermore, CO2 is a highly temperature sensitive gas, in paintball applications Co2 will range in pressure from 700psi to 1100psi based upon temperature and other atmospherical conditions. So which is better? Each has its advantages, but the short answer is – Compressed Air As with all ballistic situations, consistency is key, and since compressed air will always be a more consistent source of propellent we would always prefer to use compressed air....

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