8mm

[shadowhawk]

I just noticed a lot of these 8mm airsoft guns. Is this something new or did I just never see them? And whats the difference in 6mm and 8mm besides the price?

[goober6644]

one bb is 6mm and the other is 8mm

[Spider]

They certainly aren't just brand new, yesterday stuff. Also the difference is that a 6mm airsoft gun shoots 6mm bbs, an 8mm airsoft gun shoots 8mm bbs.

[shadowhawk]

i know but is there an advantage to the 8mm?

[dave OC-6]

no advantage, infact the range is lower, and they are more dangrous. they look good and all but IMO i would stay away from them... and no parts to fix them with you can get without going overseas

good night everyone, put a fork in me im done

[ghost]

Also the pellets are hard to get and more expensive than 6mm

[caliban]

They're kinda like the Beta tapes of the airsoft world

[SnakeAssault]

I've seen them in fancy replicas that aren't typically skirmished with. Such as the Mateba.

[weberac]

Aug 30, 2012 22:47:30 GMT -5 caliban said:

They're kinda like the Beta tapes of the airsoft world

Extremely accurate statement. There are a few companies out there that still make these, but they are few and far between.

[leatherapron]

and they are more dangrous.

That is simply not true, my friend.
There is no difference in the impact of an 8mm vs a 6mm BB as long as you follow the velocity tables when chronoing the gun. As we all know the standard maximum velocity limit in Tx and most of the US is measured as 400 fps measured with a .20 gram BB. That equals to 1.479 joules of energy. Now the bag of 8mm BBs I have here in front of me gives their weight as being .43 grams. To obtain a similar level of energy/impact these 8mm BBs can have a velocity of no more than 265 fps. So 8mm is not in any way more inherently "dangerous" than 6mm if used at velocities apropriate for their BB weight.

Please don't spread misinformation.

Now the actual problem with 8mm guns (aside from their rarity, expense, and the fact they are only gas powered and thus somwhat less skirmish ready than AEGs) is that most are shooting higher than a safe limit out of the box...something that is hardly restricted to 8mm guns as I'm sure you know. All but the lowested power 8mm guns cannot be used with propane as a result and have to be powered by duster gas or the hard to find "Japan gas".

[dave OC-6]

ok then i will try to be nice to you sence this was your first post but i will start by saying if you want to say im spreading missinformation around then your time here will be short.

the 8mm is a low powered gun when used with the proper gas, but over and over again people try to up the fps by useing the red gas and or duster gas or other high pressure gas to 350 or above.... this puts it WAY over the max FPS via juels for most fields and there is a chance for the magazine seals blowing....

keep it simple, keep them off the field unless cleared by the owner.
dave

[leatherapron]

if you want to say im spreading missinformation around then your time here will be short

By misinformation, I simply meant that you made a definate statement that was factually incorrect. This leads to other less experenced readers taking it as being true and thus leading to faulty information being spread. If you took that as some sort of personal atatck or other perjorative then I am sorry.

the 8mm is a low powered gun when used with the proper gas, but over and over again people try to up the fps by useing the red gas and or duster gas or other high pressure gas to 350 or above

That also contains factually incorrect information. Duster gas is not "high preasure" by any means. Duster gas is actually considerably less powerful than is the stadard green gas or propane that most people use in their gas guns. It is generally used when someone wants to lower the velocity of their gas gun to legal limits. I do this with my two Marushin 8mm guns. The same can be said of the rarely encountered HFC-134a or "Japan Gas". Given their rarity I have never seen anyone try to use an 8mm gun with hotter gas such as red gas or propane to cicumvent the velocity rules. But your experience may vary of course.

keep it simple, keep them off the field unless cleared by the owner.

And that is a simple and reasonable policy I can agree with. Field owners should chrono all guns, including sidearms. But they should take special care the examine non-standard guns like 8mm pistols and those that are notorious for shooting hit such as CO2 guns.

[leatherapron]

Oh and for what t's worth, OC-6, I don;t think you are purposely trying to be misleading. I figure it was lack of knowledge on the subject rather than trying to be deceptive. ignroance is not a sin.

[dave OC-6]

ok
where do you play? are you on a team?
dave

[leatherapron]

Sept 10, 2012 6:31:09 GMT -5 dave OC-6 said:

ok
where do you play? are you on a team?
dave

Trying to establish my credentials?
I play in the DFW area and am not on a team right now. I've been to the Temple field one time back during the Aftermath Op.

I like my 8mm pistols and think marushin makes some of the finest gas pistols out there. But I can't use them up here at FAA because they require bio BBs, which are not made in 8mm.

[geddon]

8mm bbs are typically not allowed because the insurance company doesn't really make a provision for them in the rules they give us.

But also, dave is partly correct in that a .43g, 8mm BB hits harder due to its retained inertia.

Danger is an opinion, and the field owners opinion is rule of law on his own field.

Simple as that.

[shadowhawk]

Why are they more dangerous? I know it's Dave's call but can someone explain it? I mean, theoretically if a 6mm bb and an 8mm bb have the same weight and are going the same speed, shouldn't they have the same amount of joules? I think I'm just missing something here.

[MotorMouth93]

It all depends on the BB weight and the velocity, the difference between 6mm and 8mm diameter is negligible with regard to energy. The energy at the muzzle is determined by the equation E = 1/2mv^2. 400fps with a .20g BB is 1.49 joules.

From a purely physics standpoint, 8mm or 6mm doesn't matter, mass and velocity are the only determining factors for energy, which is what determines how "dangerous" it is.

However, since 8mm guns are so uncommon and the BB's tend to be heavier, Dave is right in his owner-approved only policy. You can't just run them through the chrono with everyone else because most 8mm guns will be using ammo much heavier than .20g and you'll have to do some math to figure out what's really going on, and the field owner would have to take the gun owners word about BB weight and its just more complicated to deal with.

[shadowhawk]

So the danger comes from trying to determine bb weight and not the actual size itself right?

[dave OC-6]

bingo,
a feather at 400 fps has a little different damage potential than a bowling ball at 400 fps. yes i know that's a extreme, but its the same.

[Foggy (CR4)]

Sept 10, 2012 15:04:51 GMT -5 dave OC-6 said:

bingo,
a feather at 400 fps has a little different damage potential than a bowling ball at 400 fps. yes i know that's a extreme, but its the same.

Especially if that feather is still attached to the Ostrich it belongs to!
Z87+ ANSI be damned!

[ghost]

Z87+ is stronger than you think. We tried to drive a sharpened bolt through a pair of safety glasses with a 6000 pound shop press. The shop press overloaded before the bolt pierced. You wouldn't have a head left but your glasses would survive

[Foggy (CR4)]

Sept 10, 2012 19:40:23 GMT -5 ghost said:

You wouldn't have a head left but your glasses would survive

LOL, Kinda my point when you take a hit from a 200 lbs bird moving at 400 fps. ;D