Walther Co2 cylinder filling

[Donross]

I dont think it'll stop filling. CO2 doesnt fill by pressure it fills by weight.
It starts filling from 1 cilinder to the other because of temperature difference. (because you had yr cilinder in the freezer).
If there's a lot of temperature difference, it'll fill up fast(er). If there's too little difference, you wont get a complete fill.
You can easily overfill bulk CO2. But it shouldnt break yr Orings like pcp does. It'll be loud and inconsistent.
Just leave cilinder on few seconds with crane open. Than check weight.
When there's 53 grams in it, or near that, yr done.

Thanks I will give it a go.