hi, i am new to gas airsoft guns and i was going to get this gun. first off, how long do you fill the mag for before it is full? second, green gas or propane? i play in my back yard with a ton of friends (we live in a small town and have huge private properties) so fps does not matter because we agreed that any semi only or sniper rifles can shoot as hot as they want and they know how much fps this has. also, do you recommend the ra tech outer and inner barrel for this gun (here is the link: http://en.ratech.com.tw/product/html...detail_017.php ) and finally, what gram bb is recommended for best range? (i am not using .4's, they sound like they mess with your hop up)

So wouldent you know it, i went to go get my gun to do some FPS tests for everyone and i found i have broken my charging handle off. :(

Anyone by chance for there stock one laying around? not a huge fan of the RA tech one.

Whoa, that is really shitty to say the least..... So I was planning on using my 10/22 for Mason Relic, but I'm in a little bind now? I was planning on not being a marksmen type player this year and I was planning on using .28's. 355fps is the max fps limit for a GBBR on .28's (as per the rules on the MR4 forum) but when I did a chrono on it with .20's it was at 480ish, which is 60fps over. The max allowed is 420fps, is it like last year where everyone chrono'd with .20's? Or would we be allowed to chrono with the weight we are going to play with?

Maybe something to post in a MR4 forum, or pm the host.

You definitely have to chrono with .20s or it will be measured along with the same mass of BB. The energy being exerted onto the BB is the same as with a .20g BB, it just moves slower. It can hurt/injure just the same as a smaller BB with the same force exerted onto it. Possibly more.

They may let you Chrono with .28s, but they will be converting the outcome to the .20 baseline to measure. In which it would be according to what you've said... 480 FPS. OUCH.

It seems to be standard practice anyway. Could go down if its a cooler day since its Gas, but I don't know how much.

Yeah I posted up on MR4 already, I'm just waiting for a response from Bent Barrel to find out, if not I could play with duster....

duster is always the best option when trying to get the fps down.

as for gas guns, i always heard you are supposed to chronie with the weight you will be using. something about how its not really effected by the weight.

Around here everyone knows i shoot 36s with mine and when using duster on even the hottest summer day it is still slow enough to take to prz

Yeah this year, just like last year they are going to chrono with .20's so I'll have to use duster at the game then. Oh well!

I read somewhere that a KJW m4 GBBR npas will also fit in the gun. I dont know if this is true but im picking one up this saturday and will see if it works.

I doubt that but let us know if it work.
That would be great :)

Yeah I asked last year. No dice because it's a semi auto, not a bolt action.

That's actually a really ass backwards way of doing things. The point of chronying guns is to make sure that you're not hurting people with the joule output of your airsoft gun.

With that in mind, the chrony rules are based around AEGs and Spring operated guns. These guns follow the principle of "it is safe, outside, if it shoots under 400fps with 0.20g BB's, as 400fps with 0.20g BB is equal to 1.49 joules."

The joules are the part which hurts, as this is literally the energy the BB carries at the muzzle (eg, a point blank shot).

AEGs and Spring operated guns firing at 1.49 joules do not increase in joules as the BB weight is increased. So a gun which fires 400fps with 0.20g, and 298fps on 0.36g, still has the same 1.49 joule rating.

THIS IS NOT THE SAME FOR MOST GAS RIFLES.

A gas rifle, (WE series, for instance) firing 400 fps with 0.20g, will have a joule rating of 1.49joules (1.49j is the energy from a 400fps 0.20g object, irrespectable of the gun firing it).

But because the gas system modifies the amount of gas fired dependant on how long the BB is in the barrel, and heavier BB's take longer to travel down the barrel, they then are pushed by more gas!

Loading the same gas gun firing 400fps with 0.20g BBs, with 0.36 BBs, will likely chrony in the area of 350fps with 0.36g BBs. This is a joule rating of 2.05joules. Which is equivalent to 470fps with 0.20g BBs fired from an AEG or a spring gun.

This is dangerous, especially if the operator is not considering a minimum engagement range with his weapon.

Use this site for more info:

http://msed.bbbastard.com/index.php?...d=53&Itemid=57

^^^^^^

thats the thing i was thinking of. thanks shelled.

Sweet, tell me if the npas works in it and yeah it sucks with being too hot.

It won't work. It's for the M4 only, not the 10/22.