Changes

The following charts show the allowed weapon classes. Only weapon classes shown here are allowed on the field. [[File:MED-revsimpler.png|700px]][[File:MED-hemi.png|700px]]

''For use, including factors for mixed units (g and ft/s)'' '''Energy = [ Speed (fps) squared ] * BB mass (g) / 21500'''

My biggest pet peeve in <blockquote>To give you a little background, this is how it works. I show up at the field with my airsoft world is rifle. I chronograph the gun using ammunition provided to me by the way field, to ensure that people talk about no one cheats. I fire three rounds and so long as they all clock under 400fps with the power of a gunsupplied 0.25s, I pass. The standard Then for measuring an airsoft gun’s power is to chronograph a 0.2g bb fired from the gun. This system is used throughout most rest of North America and the world for establishing field limits as wellday I actually utilize 0. A common limit for an outdoor airsoft field might be 400fps with 28 or 0.2g 30g bbs. The field that I frequent has its limit set additional weight of the bb decreases my velocity at 400fps the muzzle (feet/secondthe end of the barrel) with 0but the energy carried by the bb remains a constant, at around 1.25g bbs 85J (0.25s being the less common standard for measurementJoules). Why on Earth do we use velocity as a standard if bb weight is a variable?!</blockquote>

To give you <blockquote>The point behind using a little background, this heavier bb is how it works. I show up at the field with my airsoft rifle. I chronograph the gun using ammunition provided to me by the field, to ensure that no one cheats. I fire three rounds and so long as they all clock under 400fps with the supplied 0.25s, I pass. Then for the rest of the day I actually utilize 0.28 or 0.30g bbsresist wind more. The additional weight of the heavier your bb decreases my velocity at , the muzzle (the end of the barrel) but less it’s effected by side to side wind and the more slowly it looses energy carried by the bb remains a constant, at around 1.85J (Joules)as it flies down-range.</blockquote>

The point behind using <blockquote>People use a heavier huge variety of bb is that they resist wind moreweights in their guns. The heavier your light 0.2g bbs are usually reserved only for players who are not in-the-know. 0.25s are commonly used for pistols and less-powerful rifles. For players who understand bbflight characteristics and have a moderately powerful rifle, the less it’s effected by side to side wind weights used are 0.28, 0.30, 0.36, and 0.43 grams. 0.36 and the more slowly it looses energy as it flies down-range0.43 are usually [incorrectly] reserved for snipers.</blockquote>

People use <blockquote>Because every player actually plays will a huge variety of different weight, it seems asinine to me that the standard for measurement is with a single bb weights in their gunsweight at x velocity. The light 0.2g bbs are usually reserved only for players who are not inJoules should be used as the standard, and velocity-thewith-know. 0.25s are commonly weight would only be used for pistols and less-powerful rifles. For players who understand bb flight characteristics and have a moderately powerful rifle, chronographing at the weights used are 0.28, 0.30, 0.36, and 0.43 grams. 0.36 and 0.43 are usually [incorrectly] reserved for snipersfield.</blockquote>

Because every player actually plays will <blockquote>The reason this came up is that I am a different weightregular poster on Airsoft Retreat, and since I don’t use 0.2g bbs for any purpose, I don’t own any. Now, when I go to chronograph a gun at home to post information about it seems asinine , I have to me that the standard for measurement is use results achieved with a single bb weight at x velocity. Joules should be used as the standard, 25s. Most people don’t know how to convert these results and only understand velocity-measurements given with-weight would only be used for chronographing at 0.2g bbs. Lets inject a little science into the field.community and get a standardized system going!</blockquote>

The reason this came up is that I am a regular poster <blockquote>Here’s some additional information on Airsoft Retreat, and since why I don’t use 0.2g heavier bbs for any purpose, (I don’t own any. Now, when I go to chronograph a gun at home to post information about it, I have to use results achieved with will be using 0.25s. Most people don’t know how to convert these results and only understand velocity measurements given with 36 or 0.2g bbs43g this year). Lets inject a little science into the community and get a standardized system going!</blockquote>

Here’s some additional information on why I use <blockquote>Many players gripe about a heavier bbs (bb causing a lower muzzle velocity, but here’s the catch: Lets say I will be using fire a 0.36 or 25 at 400fps. That’s about 1.85J. That means that a 0.43g 43 fired from the same gun would leave the barrel at only 290fps. To most players this yearseems like a hinderance. Nay. Lets go 21m (69ft)down range. The 0.25 was greatly effected by the wind and has now slowed to 203fps. Meanwhile the 0.43, which started 110fps slower, is now traveling faster at 205fps. Most people with guns shooting above 1.6J are regularly engaging targets beyond 100ft. At those ranges, not only are the 0.43s now going faster, but they are carrying vastly more energy to continue their journey with. At the aforementioned 21 meters, the 0.25 has dropped from 1.85J at the muzzle to only 0.47J. The 0.43 has retained much more energy and is still carrying 0.84J of the original 1.85J.</blockquote>

Many players gripe about a <blockquote>There are tradeoffs involved which don’t always make heavier better. If you’re shooting at ranges beyond 50 meters then heavier bb causing a lower muzzle velocityis always better, but here’s because at 50m the catch: Lets say I fire a 0.25 at 400fps. That’s average speed of all bb weights is about 1.85J. That means that a 0.43 fired from the same gun would leave the barrel at only 290fps. To most players this seems like a hinderance. Nay. Lets go 21m (69ft) down range. The 0.25 was greatly effected by the wind and has now slowed to 203fps. Meanwhile the 0.43If, which started 110fps slowerhowever, is now traveling faster at 205fps. Most people with guns shooting above 1.6J you are regularly engaging targets beyond 100ft. At those in urban combat at close ranges, not only are the 0you may want to stick to something like a .43s now going faster, but they are carrying vastly more energy to continue their journey with28. At the aforementioned 21 a mere 12 meters, the 0.25 has dropped from 1.85J 28 will reach its target more quickly and at the muzzle that range you don’t need to only 0.47J. The 0.43 has retained much more be as concerned with conserving stored energy and is still carrying 0.84J of the original 1.85JYou just want it to get there as immediately as possible.</blockquote>

There are tradeoffs involved which don’t always make heavier better. If you’re shooting at ranges beyond 50 meters then heavier is always better, because at 50m the average speed <blockquote>This year I plan to carry a combination of all bb weights is about the same0. If, however, you are engaging in urban combat at 28s for close rangesquarters use, you may want to stick to something like a and 0.28. At a mere 12 meters, the .28 will reach its target more quickly and at that 36s for long range you don’t need to be as concerned with conserving stored energy. You just want it to get there as immediately as possibleuse.</blockquote>

This year I plan to carry a combination of 0== Additional References ===== Airsoft Master ===[https://www.28s for close quarters use, and 0airsoftmaster.36s com/fps-chart-for long range use-airsoft-guns/ Airsoft Energy Chart] covering multiple ammunition masses.

([http://texasairsoft.org/content.php?127-Muzzle-Energy&s=f5933aee13290d0cbc818dd1b27be055 Chart on TASO site], [https://web.archive.org/web/20071014054556/http://www.texasairsoft.org:80/index.php?page=chrono Archived])

([http://texasairsoft.org/content.php?125-Rules-of-Engagement&s=f5933aee13290d0cbc818dd1b27be055 TASO Rules on TASO site], [https://web.archive.org/web/20071014054556/http://texasairsoft.org:80/index.php?page=ROE Archived]) ([https://www.houstonairsoft.com/forum/houston-airsoft-community/general-discussion/3263-taso-fps-joules-chrono-energy-chart Related at Houston Airsoft])

[http://img803.imageshack.us/img803/4561/airsoftbbimpactenergyta.jpg Table for Larger Fields], [http://www.thewarzoneairsoft.com/Rules.html General Rules]

'''FOR PLAYERS USE''' 

 '''2. STANDARD LIMIT VALUES'''{| class="wikitable"! Gun Class ! colspan=3 | Muzzle Velocity (0.20g BB) ! Muzzle EnergyEquivalent|-Class ! !! Minimum !! Maximum !! Tolerance Equivalent!!--------------------------------------------------------------------|-|Knife ||0 ||0 ||0 ||0|-|CQB or Sidearm ||n/a ||330 ||0 ||1.00 J|-|Automatic ||330 ||400 ||+15 ||1.48 (+0.12)|-!Sniper|| || || || |- |DMR (Sniper 1) ||420 ||450 ||0 ||1.90 |-|Bolt-action|| || || || |-|Sniper 2 ||451 ||500 ||0 ||2.30 |-|Sniper 3 ||501 ||550 ||0 ||2.80 |}