Incorrect hfc134a mag fill? (TM hi capa magazine)

[laterDays]

Hi I use a butane adaptor to fill my tm hi capa mags. Quite a bit of gas seemed to leak because the connection between the adaptor and the magazine wasn't the greatest. Hence, I dremmeled a small Indentation using this dremel head http://www.dremel.com/en-us/Attachments ... x?pid=7144 . The connection seems better, but it still seems a tiny bit of gas leaks during the fill. But, when I fill my mags it takes about 7 seconds to fill the magazines and that fill only has enough gas to go about 40 rounds. I read that 1 charge should take about 3 seconds and be able to shoot about 3 magazines worth! If you have an idea what the problem is, please share! Thanks.

[Variable]

Did you dremel the fill valve or the butane adapter?
What gas are you trying to load into it?

[laterDays]

Ah excuse my vagueness. I dremelled a slight concave cavity (about 2mm deep) into the butane adapter to fit the convex shape of the TM magazine fill valve. I am loading duster HFC 134a into the magazine.

[Variable]

Not to discourage your DIY spirit, but you'll have much better results with one of these: http://www.airsplat.com/Items/GG-AI-PROP-ADAP.htm

Hrm, you said that you can only shoot 40rds on one fill? Thats about typical for most GBBs. Unless you can beat that 40rd mark using bottled japan gas, I wouldn't fret it.

[John_234]

Indeed, but consider that the double stack .45 magazines are among the largest you can find...

So, when you say forty rounds, what ambient temperature, and at how fast a rate are you firing?