So far all I can say is Wow. Really enjoyed using it and looking forward to a bottling I have planned in a week. As I noted in the video, I have Eight (8) samples that I will open (One each week) to see how well the carbonation is maintained. This past Friday was the first bottle and it maintained the carbonation level as expected. I am interested in weeks 5 to 8. Stay tuned but in the meantime check out my video with the Beer Gun the first time.