you should use the rocket launcher attached to the gun. According to my experiencs, tha zusatzlauf greatly increase the gas pressure and the fouling. I think 100 rounds with the zusatzlauf equal with 500 normal shots. I know this test was organized around the silvester-action
Thanks for that advice, we assumed that also.
The test wasn't planned to be "in preparation" for silvester, that was more by coincidence (der Test fand nur zufällig kurz vor Silvester statt) - we received the first test pistols last october 2009, but it took us some months to organize the test. The second test in the company was much faster, within 4 hours...