what about hit power? how much harder would 0.25 hit something/someone compared to 0.2?

i'd imagin quite a bit

Let's just say, the one getting hit would feel it better as well as hear it better especially when you're in medium/long range. Not saying it's going to inflict a lot of pain, but with all the BDU and Vest we wear, sometimes it's hard to tell the difference between 0.2s from far away and a tree branch depending where one gets hit.

For GBBs, I use 0.3g in games, better accuracy and not much lost in distance/velocity. For plinking, 0.2s, 0.25s depending what I have laying around. And since I don't use my pistols all that often, it doesn't dent my wallet a whole lot.

Update
 

This thing needs to be updated. My KJW's are using propane (or green gas) as recommended by the manufacturer. This FAQ says to use top gas only for KJW's when infact, most of their newer guns now shoot green gas, no? I could be wrong, but eh.

top gas is greengas

Ahh....well...thanks for clearing that up for me....

That's a very good guide. Thanks.

awsome, i can use propane in my WA M92FS. thanks for the tip.

here is the video i found for GBB maintenance posted by RWA

YouTube - Gas Blowback Regular Maintenance

uh oh i just got a KJW glock 32c and im worried that i need a new mag... when i first got the gun i kept filling it right side up not upside down like you supposed to... guess i should have read this right away because thats not the only thing i did!! i also: filled the gun when the mag was ice cold, never got a good seal on the hole where you put your gas in (i thought discharge was normal) and now my gun discharges like crap!!! gas wont even go in my gun!! im worried my gun is broken but i hope its just the mag..PS this is the first gas gun i have gotten.

You might want to put your question into the Gun Doc section of the forum...this section is for gathering solid info all in one place, not to be diluted with questions/one-off troubleshooting.

Tys

Hi guys,

I always wondered, and can't find anything on this, is it a good idea to put lube on the big rubber seal on top of the mag? the one where it has a square hole where the gas shoots out on the mag and makes a seal with the gun? or can we just leave it alone. I know when you buy a spare mag there is nothing on it....any ideas?

Sorry for ressurecting the old thread. If this was already discussed in some other thread, sorry, could not find it. Please point me to the right place.
This is a great guide, but I have noticed that some other people advise to fill mags with 3sec bursts as opposed to one 5-6sec burst, in order not to freeze o-rings on the fill valve. I would imagine you need more than 6sec for, say, WE M4 mag, since it is larger than handgun mag.
So, what in your opinion is the best practice for filling GBBR and handgun mags? How many BBs do you usually put in your mag? I personally find that 6sec is not enough to fill WE M4 mag in order to fire all rounds for 20°C.

I fill my pistol mags until they're full...

Why would that freeze your O-ring...