raising CO2 match airrifles

[yana]

I read about a 'problem'with these, if you raise the barrel above about 15 degrees while getting on target, the CO2 flows backwards, causing a POI shift.
I'm considering a Walther CG90, but this got me worried.
How serious is this problem?

[Spencer]

the problem does not exist

[2650 Plus]

IMHO Spencer is absolutely correct. Good Shooting Bill Horton